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1885 lines
46 KiB
1885 lines
46 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* fs/f2fs/checkpoint.c |
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* |
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* Copyright (c) 2012 Samsung Electronics Co., Ltd. |
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* http://www.samsung.com/ |
|
*/ |
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#include <linux/fs.h> |
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#include <linux/bio.h> |
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#include <linux/mpage.h> |
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#include <linux/writeback.h> |
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#include <linux/blkdev.h> |
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#include <linux/f2fs_fs.h> |
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#include <linux/pagevec.h> |
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#include <linux/swap.h> |
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#include <linux/kthread.h> |
|
|
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#include "f2fs.h" |
|
#include "node.h" |
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#include "segment.h" |
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#include <trace/events/f2fs.h> |
|
|
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#define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3)) |
|
|
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static struct kmem_cache *ino_entry_slab; |
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struct kmem_cache *f2fs_inode_entry_slab; |
|
|
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void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io) |
|
{ |
|
f2fs_build_fault_attr(sbi, 0, 0); |
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set_ckpt_flags(sbi, CP_ERROR_FLAG); |
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if (!end_io) |
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f2fs_flush_merged_writes(sbi); |
|
} |
|
|
|
/* |
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* We guarantee no failure on the returned page. |
|
*/ |
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struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
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{ |
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struct address_space *mapping = META_MAPPING(sbi); |
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struct page *page; |
|
repeat: |
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page = f2fs_grab_cache_page(mapping, index, false); |
|
if (!page) { |
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cond_resched(); |
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goto repeat; |
|
} |
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f2fs_wait_on_page_writeback(page, META, true, true); |
|
if (!PageUptodate(page)) |
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SetPageUptodate(page); |
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return page; |
|
} |
|
|
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static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index, |
|
bool is_meta) |
|
{ |
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struct address_space *mapping = META_MAPPING(sbi); |
|
struct page *page; |
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struct f2fs_io_info fio = { |
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.sbi = sbi, |
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.type = META, |
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.op = REQ_OP_READ, |
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.op_flags = REQ_META | REQ_PRIO, |
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.old_blkaddr = index, |
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.new_blkaddr = index, |
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.encrypted_page = NULL, |
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.is_por = !is_meta, |
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}; |
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int err; |
|
|
|
if (unlikely(!is_meta)) |
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fio.op_flags &= ~REQ_META; |
|
repeat: |
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page = f2fs_grab_cache_page(mapping, index, false); |
|
if (!page) { |
|
cond_resched(); |
|
goto repeat; |
|
} |
|
if (PageUptodate(page)) |
|
goto out; |
|
|
|
fio.page = page; |
|
|
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err = f2fs_submit_page_bio(&fio); |
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if (err) { |
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f2fs_put_page(page, 1); |
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return ERR_PTR(err); |
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} |
|
|
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f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE); |
|
|
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lock_page(page); |
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if (unlikely(page->mapping != mapping)) { |
|
f2fs_put_page(page, 1); |
|
goto repeat; |
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} |
|
|
|
if (unlikely(!PageUptodate(page))) { |
|
f2fs_put_page(page, 1); |
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return ERR_PTR(-EIO); |
|
} |
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out: |
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return page; |
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} |
|
|
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struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
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{ |
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return __get_meta_page(sbi, index, true); |
|
} |
|
|
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struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index) |
|
{ |
|
struct page *page; |
|
int count = 0; |
|
|
|
retry: |
|
page = __get_meta_page(sbi, index, true); |
|
if (IS_ERR(page)) { |
|
if (PTR_ERR(page) == -EIO && |
|
++count <= DEFAULT_RETRY_IO_COUNT) |
|
goto retry; |
|
f2fs_stop_checkpoint(sbi, false); |
|
} |
|
return page; |
|
} |
|
|
|
/* for POR only */ |
|
struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index) |
|
{ |
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return __get_meta_page(sbi, index, false); |
|
} |
|
|
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static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr, |
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int type) |
|
{ |
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struct seg_entry *se; |
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unsigned int segno, offset; |
|
bool exist; |
|
|
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if (type != DATA_GENERIC_ENHANCE && type != DATA_GENERIC_ENHANCE_READ) |
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return true; |
|
|
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segno = GET_SEGNO(sbi, blkaddr); |
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offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
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se = get_seg_entry(sbi, segno); |
|
|
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exist = f2fs_test_bit(offset, se->cur_valid_map); |
|
if (!exist && type == DATA_GENERIC_ENHANCE) { |
|
f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d", |
|
blkaddr, exist); |
|
set_sbi_flag(sbi, SBI_NEED_FSCK); |
|
WARN_ON(1); |
|
} |
|
return exist; |
|
} |
|
|
|
bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi, |
|
block_t blkaddr, int type) |
|
{ |
|
switch (type) { |
|
case META_NAT: |
|
break; |
|
case META_SIT: |
|
if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) |
|
return false; |
|
break; |
|
case META_SSA: |
|
if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || |
|
blkaddr < SM_I(sbi)->ssa_blkaddr)) |
|
return false; |
|
break; |
|
case META_CP: |
|
if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || |
|
blkaddr < __start_cp_addr(sbi))) |
|
return false; |
|
break; |
|
case META_POR: |
|
if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
|
blkaddr < MAIN_BLKADDR(sbi))) |
|
return false; |
|
break; |
|
case DATA_GENERIC: |
|
case DATA_GENERIC_ENHANCE: |
|
case DATA_GENERIC_ENHANCE_READ: |
|
if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
|
blkaddr < MAIN_BLKADDR(sbi))) { |
|
f2fs_warn(sbi, "access invalid blkaddr:%u", |
|
blkaddr); |
|
set_sbi_flag(sbi, SBI_NEED_FSCK); |
|
WARN_ON(1); |
|
return false; |
|
} else { |
|
return __is_bitmap_valid(sbi, blkaddr, type); |
|
} |
|
break; |
|
case META_GENERIC: |
|
if (unlikely(blkaddr < SEG0_BLKADDR(sbi) || |
|
blkaddr >= MAIN_BLKADDR(sbi))) |
|
return false; |
|
break; |
|
default: |
|
BUG(); |
|
} |
|
|
|
return true; |
|
} |
|
|
|
/* |
|
* Readahead CP/NAT/SIT/SSA/POR pages |
|
*/ |
|
int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, |
|
int type, bool sync) |
|
{ |
|
struct page *page; |
|
block_t blkno = start; |
|
struct f2fs_io_info fio = { |
|
.sbi = sbi, |
|
.type = META, |
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.op = REQ_OP_READ, |
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.op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD, |
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.encrypted_page = NULL, |
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.in_list = false, |
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.is_por = (type == META_POR), |
|
}; |
|
struct blk_plug plug; |
|
int err; |
|
|
|
if (unlikely(type == META_POR)) |
|
fio.op_flags &= ~REQ_META; |
|
|
|
blk_start_plug(&plug); |
|
for (; nrpages-- > 0; blkno++) { |
|
|
|
if (!f2fs_is_valid_blkaddr(sbi, blkno, type)) |
|
goto out; |
|
|
|
switch (type) { |
|
case META_NAT: |
|
if (unlikely(blkno >= |
|
NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) |
|
blkno = 0; |
|
/* get nat block addr */ |
|
fio.new_blkaddr = current_nat_addr(sbi, |
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blkno * NAT_ENTRY_PER_BLOCK); |
|
break; |
|
case META_SIT: |
|
if (unlikely(blkno >= TOTAL_SEGS(sbi))) |
|
goto out; |
|
/* get sit block addr */ |
|
fio.new_blkaddr = current_sit_addr(sbi, |
|
blkno * SIT_ENTRY_PER_BLOCK); |
|
break; |
|
case META_SSA: |
|
case META_CP: |
|
case META_POR: |
|
fio.new_blkaddr = blkno; |
|
break; |
|
default: |
|
BUG(); |
|
} |
|
|
|
page = f2fs_grab_cache_page(META_MAPPING(sbi), |
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fio.new_blkaddr, false); |
|
if (!page) |
|
continue; |
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if (PageUptodate(page)) { |
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f2fs_put_page(page, 1); |
|
continue; |
|
} |
|
|
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fio.page = page; |
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err = f2fs_submit_page_bio(&fio); |
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f2fs_put_page(page, err ? 1 : 0); |
|
|
|
if (!err) |
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f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE); |
|
} |
|
out: |
|
blk_finish_plug(&plug); |
|
return blkno - start; |
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} |
|
|
|
void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) |
|
{ |
|
struct page *page; |
|
bool readahead = false; |
|
|
|
page = find_get_page(META_MAPPING(sbi), index); |
|
if (!page || !PageUptodate(page)) |
|
readahead = true; |
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f2fs_put_page(page, 0); |
|
|
|
if (readahead) |
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f2fs_ra_meta_pages(sbi, index, BIO_MAX_VECS, META_POR, true); |
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} |
|
|
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static int __f2fs_write_meta_page(struct page *page, |
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struct writeback_control *wbc, |
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enum iostat_type io_type) |
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{ |
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struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
|
|
|
trace_f2fs_writepage(page, META); |
|
|
|
if (unlikely(f2fs_cp_error(sbi))) |
|
goto redirty_out; |
|
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
|
goto redirty_out; |
|
if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) |
|
goto redirty_out; |
|
|
|
f2fs_do_write_meta_page(sbi, page, io_type); |
|
dec_page_count(sbi, F2FS_DIRTY_META); |
|
|
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if (wbc->for_reclaim) |
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f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META); |
|
|
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unlock_page(page); |
|
|
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if (unlikely(f2fs_cp_error(sbi))) |
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f2fs_submit_merged_write(sbi, META); |
|
|
|
return 0; |
|
|
|
redirty_out: |
|
redirty_page_for_writepage(wbc, page); |
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return AOP_WRITEPAGE_ACTIVATE; |
|
} |
|
|
|
static int f2fs_write_meta_page(struct page *page, |
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struct writeback_control *wbc) |
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{ |
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return __f2fs_write_meta_page(page, wbc, FS_META_IO); |
|
} |
|
|
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static int f2fs_write_meta_pages(struct address_space *mapping, |
|
struct writeback_control *wbc) |
|
{ |
|
struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
|
long diff, written; |
|
|
|
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
|
goto skip_write; |
|
|
|
/* collect a number of dirty meta pages and write together */ |
|
if (wbc->sync_mode != WB_SYNC_ALL && |
|
get_pages(sbi, F2FS_DIRTY_META) < |
|
nr_pages_to_skip(sbi, META)) |
|
goto skip_write; |
|
|
|
/* if locked failed, cp will flush dirty pages instead */ |
|
if (!down_write_trylock(&sbi->cp_global_sem)) |
|
goto skip_write; |
|
|
|
trace_f2fs_writepages(mapping->host, wbc, META); |
|
diff = nr_pages_to_write(sbi, META, wbc); |
|
written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO); |
|
up_write(&sbi->cp_global_sem); |
|
wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
|
return 0; |
|
|
|
skip_write: |
|
wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); |
|
trace_f2fs_writepages(mapping->host, wbc, META); |
|
return 0; |
|
} |
|
|
|
long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, |
|
long nr_to_write, enum iostat_type io_type) |
|
{ |
|
struct address_space *mapping = META_MAPPING(sbi); |
|
pgoff_t index = 0, prev = ULONG_MAX; |
|
struct pagevec pvec; |
|
long nwritten = 0; |
|
int nr_pages; |
|
struct writeback_control wbc = { |
|
.for_reclaim = 0, |
|
}; |
|
struct blk_plug plug; |
|
|
|
pagevec_init(&pvec); |
|
|
|
blk_start_plug(&plug); |
|
|
|
while ((nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, |
|
PAGECACHE_TAG_DIRTY))) { |
|
int i; |
|
|
|
for (i = 0; i < nr_pages; i++) { |
|
struct page *page = pvec.pages[i]; |
|
|
|
if (prev == ULONG_MAX) |
|
prev = page->index - 1; |
|
if (nr_to_write != LONG_MAX && page->index != prev + 1) { |
|
pagevec_release(&pvec); |
|
goto stop; |
|
} |
|
|
|
lock_page(page); |
|
|
|
if (unlikely(page->mapping != mapping)) { |
|
continue_unlock: |
|
unlock_page(page); |
|
continue; |
|
} |
|
if (!PageDirty(page)) { |
|
/* someone wrote it for us */ |
|
goto continue_unlock; |
|
} |
|
|
|
f2fs_wait_on_page_writeback(page, META, true, true); |
|
|
|
if (!clear_page_dirty_for_io(page)) |
|
goto continue_unlock; |
|
|
|
if (__f2fs_write_meta_page(page, &wbc, io_type)) { |
|
unlock_page(page); |
|
break; |
|
} |
|
nwritten++; |
|
prev = page->index; |
|
if (unlikely(nwritten >= nr_to_write)) |
|
break; |
|
} |
|
pagevec_release(&pvec); |
|
cond_resched(); |
|
} |
|
stop: |
|
if (nwritten) |
|
f2fs_submit_merged_write(sbi, type); |
|
|
|
blk_finish_plug(&plug); |
|
|
|
return nwritten; |
|
} |
|
|
|
static int f2fs_set_meta_page_dirty(struct page *page) |
|
{ |
|
trace_f2fs_set_page_dirty(page, META); |
|
|
|
if (!PageUptodate(page)) |
|
SetPageUptodate(page); |
|
if (!PageDirty(page)) { |
|
__set_page_dirty_nobuffers(page); |
|
inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
|
set_page_private_reference(page); |
|
return 1; |
|
} |
|
return 0; |
|
} |
|
|
|
const struct address_space_operations f2fs_meta_aops = { |
|
.writepage = f2fs_write_meta_page, |
|
.writepages = f2fs_write_meta_pages, |
|
.set_page_dirty = f2fs_set_meta_page_dirty, |
|
.invalidatepage = f2fs_invalidate_page, |
|
.releasepage = f2fs_release_page, |
|
#ifdef CONFIG_MIGRATION |
|
.migratepage = f2fs_migrate_page, |
|
#endif |
|
}; |
|
|
|
static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, |
|
unsigned int devidx, int type) |
|
{ |
|
struct inode_management *im = &sbi->im[type]; |
|
struct ino_entry *e, *tmp; |
|
|
|
tmp = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS); |
|
|
|
radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); |
|
|
|
spin_lock(&im->ino_lock); |
|
e = radix_tree_lookup(&im->ino_root, ino); |
|
if (!e) { |
|
e = tmp; |
|
if (unlikely(radix_tree_insert(&im->ino_root, ino, e))) |
|
f2fs_bug_on(sbi, 1); |
|
|
|
memset(e, 0, sizeof(struct ino_entry)); |
|
e->ino = ino; |
|
|
|
list_add_tail(&e->list, &im->ino_list); |
|
if (type != ORPHAN_INO) |
|
im->ino_num++; |
|
} |
|
|
|
if (type == FLUSH_INO) |
|
f2fs_set_bit(devidx, (char *)&e->dirty_device); |
|
|
|
spin_unlock(&im->ino_lock); |
|
radix_tree_preload_end(); |
|
|
|
if (e != tmp) |
|
kmem_cache_free(ino_entry_slab, tmp); |
|
} |
|
|
|
static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
|
{ |
|
struct inode_management *im = &sbi->im[type]; |
|
struct ino_entry *e; |
|
|
|
spin_lock(&im->ino_lock); |
|
e = radix_tree_lookup(&im->ino_root, ino); |
|
if (e) { |
|
list_del(&e->list); |
|
radix_tree_delete(&im->ino_root, ino); |
|
im->ino_num--; |
|
spin_unlock(&im->ino_lock); |
|
kmem_cache_free(ino_entry_slab, e); |
|
return; |
|
} |
|
spin_unlock(&im->ino_lock); |
|
} |
|
|
|
void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
|
{ |
|
/* add new dirty ino entry into list */ |
|
__add_ino_entry(sbi, ino, 0, type); |
|
} |
|
|
|
void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
|
{ |
|
/* remove dirty ino entry from list */ |
|
__remove_ino_entry(sbi, ino, type); |
|
} |
|
|
|
/* mode should be APPEND_INO, UPDATE_INO or TRANS_DIR_INO */ |
|
bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) |
|
{ |
|
struct inode_management *im = &sbi->im[mode]; |
|
struct ino_entry *e; |
|
|
|
spin_lock(&im->ino_lock); |
|
e = radix_tree_lookup(&im->ino_root, ino); |
|
spin_unlock(&im->ino_lock); |
|
return e ? true : false; |
|
} |
|
|
|
void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all) |
|
{ |
|
struct ino_entry *e, *tmp; |
|
int i; |
|
|
|
for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) { |
|
struct inode_management *im = &sbi->im[i]; |
|
|
|
spin_lock(&im->ino_lock); |
|
list_for_each_entry_safe(e, tmp, &im->ino_list, list) { |
|
list_del(&e->list); |
|
radix_tree_delete(&im->ino_root, e->ino); |
|
kmem_cache_free(ino_entry_slab, e); |
|
im->ino_num--; |
|
} |
|
spin_unlock(&im->ino_lock); |
|
} |
|
} |
|
|
|
void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, |
|
unsigned int devidx, int type) |
|
{ |
|
__add_ino_entry(sbi, ino, devidx, type); |
|
} |
|
|
|
bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, |
|
unsigned int devidx, int type) |
|
{ |
|
struct inode_management *im = &sbi->im[type]; |
|
struct ino_entry *e; |
|
bool is_dirty = false; |
|
|
|
spin_lock(&im->ino_lock); |
|
e = radix_tree_lookup(&im->ino_root, ino); |
|
if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device)) |
|
is_dirty = true; |
|
spin_unlock(&im->ino_lock); |
|
return is_dirty; |
|
} |
|
|
|
int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi) |
|
{ |
|
struct inode_management *im = &sbi->im[ORPHAN_INO]; |
|
int err = 0; |
|
|
|
spin_lock(&im->ino_lock); |
|
|
|
if (time_to_inject(sbi, FAULT_ORPHAN)) { |
|
spin_unlock(&im->ino_lock); |
|
f2fs_show_injection_info(sbi, FAULT_ORPHAN); |
|
return -ENOSPC; |
|
} |
|
|
|
if (unlikely(im->ino_num >= sbi->max_orphans)) |
|
err = -ENOSPC; |
|
else |
|
im->ino_num++; |
|
spin_unlock(&im->ino_lock); |
|
|
|
return err; |
|
} |
|
|
|
void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi) |
|
{ |
|
struct inode_management *im = &sbi->im[ORPHAN_INO]; |
|
|
|
spin_lock(&im->ino_lock); |
|
f2fs_bug_on(sbi, im->ino_num == 0); |
|
im->ino_num--; |
|
spin_unlock(&im->ino_lock); |
|
} |
|
|
|
void f2fs_add_orphan_inode(struct inode *inode) |
|
{ |
|
/* add new orphan ino entry into list */ |
|
__add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO); |
|
f2fs_update_inode_page(inode); |
|
} |
|
|
|
void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
|
{ |
|
/* remove orphan entry from orphan list */ |
|
__remove_ino_entry(sbi, ino, ORPHAN_INO); |
|
} |
|
|
|
static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
|
{ |
|
struct inode *inode; |
|
struct node_info ni; |
|
int err; |
|
|
|
inode = f2fs_iget_retry(sbi->sb, ino); |
|
if (IS_ERR(inode)) { |
|
/* |
|
* there should be a bug that we can't find the entry |
|
* to orphan inode. |
|
*/ |
|
f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT); |
|
return PTR_ERR(inode); |
|
} |
|
|
|
err = dquot_initialize(inode); |
|
if (err) { |
|
iput(inode); |
|
goto err_out; |
|
} |
|
|
|
clear_nlink(inode); |
|
|
|
/* truncate all the data during iput */ |
|
iput(inode); |
|
|
|
err = f2fs_get_node_info(sbi, ino, &ni); |
|
if (err) |
|
goto err_out; |
|
|
|
/* ENOMEM was fully retried in f2fs_evict_inode. */ |
|
if (ni.blk_addr != NULL_ADDR) { |
|
err = -EIO; |
|
goto err_out; |
|
} |
|
return 0; |
|
|
|
err_out: |
|
set_sbi_flag(sbi, SBI_NEED_FSCK); |
|
f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.", |
|
__func__, ino); |
|
return err; |
|
} |
|
|
|
int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi) |
|
{ |
|
block_t start_blk, orphan_blocks, i, j; |
|
unsigned int s_flags = sbi->sb->s_flags; |
|
int err = 0; |
|
#ifdef CONFIG_QUOTA |
|
int quota_enabled; |
|
#endif |
|
|
|
if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) |
|
return 0; |
|
|
|
if (bdev_read_only(sbi->sb->s_bdev)) { |
|
f2fs_info(sbi, "write access unavailable, skipping orphan cleanup"); |
|
return 0; |
|
} |
|
|
|
if (s_flags & SB_RDONLY) { |
|
f2fs_info(sbi, "orphan cleanup on readonly fs"); |
|
sbi->sb->s_flags &= ~SB_RDONLY; |
|
} |
|
|
|
#ifdef CONFIG_QUOTA |
|
/* Needed for iput() to work correctly and not trash data */ |
|
sbi->sb->s_flags |= SB_ACTIVE; |
|
|
|
/* |
|
* Turn on quotas which were not enabled for read-only mounts if |
|
* filesystem has quota feature, so that they are updated correctly. |
|
*/ |
|
quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY); |
|
#endif |
|
|
|
start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi); |
|
orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi); |
|
|
|
f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true); |
|
|
|
for (i = 0; i < orphan_blocks; i++) { |
|
struct page *page; |
|
struct f2fs_orphan_block *orphan_blk; |
|
|
|
page = f2fs_get_meta_page(sbi, start_blk + i); |
|
if (IS_ERR(page)) { |
|
err = PTR_ERR(page); |
|
goto out; |
|
} |
|
|
|
orphan_blk = (struct f2fs_orphan_block *)page_address(page); |
|
for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { |
|
nid_t ino = le32_to_cpu(orphan_blk->ino[j]); |
|
|
|
err = recover_orphan_inode(sbi, ino); |
|
if (err) { |
|
f2fs_put_page(page, 1); |
|
goto out; |
|
} |
|
} |
|
f2fs_put_page(page, 1); |
|
} |
|
/* clear Orphan Flag */ |
|
clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG); |
|
out: |
|
set_sbi_flag(sbi, SBI_IS_RECOVERED); |
|
|
|
#ifdef CONFIG_QUOTA |
|
/* Turn quotas off */ |
|
if (quota_enabled) |
|
f2fs_quota_off_umount(sbi->sb); |
|
#endif |
|
sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ |
|
|
|
return err; |
|
} |
|
|
|
static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) |
|
{ |
|
struct list_head *head; |
|
struct f2fs_orphan_block *orphan_blk = NULL; |
|
unsigned int nentries = 0; |
|
unsigned short index = 1; |
|
unsigned short orphan_blocks; |
|
struct page *page = NULL; |
|
struct ino_entry *orphan = NULL; |
|
struct inode_management *im = &sbi->im[ORPHAN_INO]; |
|
|
|
orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); |
|
|
|
/* |
|
* we don't need to do spin_lock(&im->ino_lock) here, since all the |
|
* orphan inode operations are covered under f2fs_lock_op(). |
|
* And, spin_lock should be avoided due to page operations below. |
|
*/ |
|
head = &im->ino_list; |
|
|
|
/* loop for each orphan inode entry and write them in Jornal block */ |
|
list_for_each_entry(orphan, head, list) { |
|
if (!page) { |
|
page = f2fs_grab_meta_page(sbi, start_blk++); |
|
orphan_blk = |
|
(struct f2fs_orphan_block *)page_address(page); |
|
memset(orphan_blk, 0, sizeof(*orphan_blk)); |
|
} |
|
|
|
orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
|
|
|
if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
|
/* |
|
* an orphan block is full of 1020 entries, |
|
* then we need to flush current orphan blocks |
|
* and bring another one in memory |
|
*/ |
|
orphan_blk->blk_addr = cpu_to_le16(index); |
|
orphan_blk->blk_count = cpu_to_le16(orphan_blocks); |
|
orphan_blk->entry_count = cpu_to_le32(nentries); |
|
set_page_dirty(page); |
|
f2fs_put_page(page, 1); |
|
index++; |
|
nentries = 0; |
|
page = NULL; |
|
} |
|
} |
|
|
|
if (page) { |
|
orphan_blk->blk_addr = cpu_to_le16(index); |
|
orphan_blk->blk_count = cpu_to_le16(orphan_blocks); |
|
orphan_blk->entry_count = cpu_to_le32(nentries); |
|
set_page_dirty(page); |
|
f2fs_put_page(page, 1); |
|
} |
|
} |
|
|
|
static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi, |
|
struct f2fs_checkpoint *ckpt) |
|
{ |
|
unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset); |
|
__u32 chksum; |
|
|
|
chksum = f2fs_crc32(sbi, ckpt, chksum_ofs); |
|
if (chksum_ofs < CP_CHKSUM_OFFSET) { |
|
chksum_ofs += sizeof(chksum); |
|
chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs, |
|
F2FS_BLKSIZE - chksum_ofs); |
|
} |
|
return chksum; |
|
} |
|
|
|
static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr, |
|
struct f2fs_checkpoint **cp_block, struct page **cp_page, |
|
unsigned long long *version) |
|
{ |
|
size_t crc_offset = 0; |
|
__u32 crc; |
|
|
|
*cp_page = f2fs_get_meta_page(sbi, cp_addr); |
|
if (IS_ERR(*cp_page)) |
|
return PTR_ERR(*cp_page); |
|
|
|
*cp_block = (struct f2fs_checkpoint *)page_address(*cp_page); |
|
|
|
crc_offset = le32_to_cpu((*cp_block)->checksum_offset); |
|
if (crc_offset < CP_MIN_CHKSUM_OFFSET || |
|
crc_offset > CP_CHKSUM_OFFSET) { |
|
f2fs_put_page(*cp_page, 1); |
|
f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset); |
|
return -EINVAL; |
|
} |
|
|
|
crc = f2fs_checkpoint_chksum(sbi, *cp_block); |
|
if (crc != cur_cp_crc(*cp_block)) { |
|
f2fs_put_page(*cp_page, 1); |
|
f2fs_warn(sbi, "invalid crc value"); |
|
return -EINVAL; |
|
} |
|
|
|
*version = cur_cp_version(*cp_block); |
|
return 0; |
|
} |
|
|
|
static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, |
|
block_t cp_addr, unsigned long long *version) |
|
{ |
|
struct page *cp_page_1 = NULL, *cp_page_2 = NULL; |
|
struct f2fs_checkpoint *cp_block = NULL; |
|
unsigned long long cur_version = 0, pre_version = 0; |
|
int err; |
|
|
|
err = get_checkpoint_version(sbi, cp_addr, &cp_block, |
|
&cp_page_1, version); |
|
if (err) |
|
return NULL; |
|
|
|
if (le32_to_cpu(cp_block->cp_pack_total_block_count) > |
|
sbi->blocks_per_seg) { |
|
f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u", |
|
le32_to_cpu(cp_block->cp_pack_total_block_count)); |
|
goto invalid_cp; |
|
} |
|
pre_version = *version; |
|
|
|
cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
|
err = get_checkpoint_version(sbi, cp_addr, &cp_block, |
|
&cp_page_2, version); |
|
if (err) |
|
goto invalid_cp; |
|
cur_version = *version; |
|
|
|
if (cur_version == pre_version) { |
|
*version = cur_version; |
|
f2fs_put_page(cp_page_2, 1); |
|
return cp_page_1; |
|
} |
|
f2fs_put_page(cp_page_2, 1); |
|
invalid_cp: |
|
f2fs_put_page(cp_page_1, 1); |
|
return NULL; |
|
} |
|
|
|
int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi) |
|
{ |
|
struct f2fs_checkpoint *cp_block; |
|
struct f2fs_super_block *fsb = sbi->raw_super; |
|
struct page *cp1, *cp2, *cur_page; |
|
unsigned long blk_size = sbi->blocksize; |
|
unsigned long long cp1_version = 0, cp2_version = 0; |
|
unsigned long long cp_start_blk_no; |
|
unsigned int cp_blks = 1 + __cp_payload(sbi); |
|
block_t cp_blk_no; |
|
int i; |
|
int err; |
|
|
|
sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks), |
|
GFP_KERNEL); |
|
if (!sbi->ckpt) |
|
return -ENOMEM; |
|
/* |
|
* Finding out valid cp block involves read both |
|
* sets( cp pack 1 and cp pack 2) |
|
*/ |
|
cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); |
|
cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); |
|
|
|
/* The second checkpoint pack should start at the next segment */ |
|
cp_start_blk_no += ((unsigned long long)1) << |
|
le32_to_cpu(fsb->log_blocks_per_seg); |
|
cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
|
|
|
if (cp1 && cp2) { |
|
if (ver_after(cp2_version, cp1_version)) |
|
cur_page = cp2; |
|
else |
|
cur_page = cp1; |
|
} else if (cp1) { |
|
cur_page = cp1; |
|
} else if (cp2) { |
|
cur_page = cp2; |
|
} else { |
|
err = -EFSCORRUPTED; |
|
goto fail_no_cp; |
|
} |
|
|
|
cp_block = (struct f2fs_checkpoint *)page_address(cur_page); |
|
memcpy(sbi->ckpt, cp_block, blk_size); |
|
|
|
if (cur_page == cp1) |
|
sbi->cur_cp_pack = 1; |
|
else |
|
sbi->cur_cp_pack = 2; |
|
|
|
/* Sanity checking of checkpoint */ |
|
if (f2fs_sanity_check_ckpt(sbi)) { |
|
err = -EFSCORRUPTED; |
|
goto free_fail_no_cp; |
|
} |
|
|
|
if (cp_blks <= 1) |
|
goto done; |
|
|
|
cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); |
|
if (cur_page == cp2) |
|
cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); |
|
|
|
for (i = 1; i < cp_blks; i++) { |
|
void *sit_bitmap_ptr; |
|
unsigned char *ckpt = (unsigned char *)sbi->ckpt; |
|
|
|
cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i); |
|
if (IS_ERR(cur_page)) { |
|
err = PTR_ERR(cur_page); |
|
goto free_fail_no_cp; |
|
} |
|
sit_bitmap_ptr = page_address(cur_page); |
|
memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); |
|
f2fs_put_page(cur_page, 1); |
|
} |
|
done: |
|
f2fs_put_page(cp1, 1); |
|
f2fs_put_page(cp2, 1); |
|
return 0; |
|
|
|
free_fail_no_cp: |
|
f2fs_put_page(cp1, 1); |
|
f2fs_put_page(cp2, 1); |
|
fail_no_cp: |
|
kvfree(sbi->ckpt); |
|
return err; |
|
} |
|
|
|
static void __add_dirty_inode(struct inode *inode, enum inode_type type) |
|
{ |
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
|
int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
|
|
|
if (is_inode_flag_set(inode, flag)) |
|
return; |
|
|
|
set_inode_flag(inode, flag); |
|
if (!f2fs_is_volatile_file(inode)) |
|
list_add_tail(&F2FS_I(inode)->dirty_list, |
|
&sbi->inode_list[type]); |
|
stat_inc_dirty_inode(sbi, type); |
|
} |
|
|
|
static void __remove_dirty_inode(struct inode *inode, enum inode_type type) |
|
{ |
|
int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
|
|
|
if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag)) |
|
return; |
|
|
|
list_del_init(&F2FS_I(inode)->dirty_list); |
|
clear_inode_flag(inode, flag); |
|
stat_dec_dirty_inode(F2FS_I_SB(inode), type); |
|
} |
|
|
|
void f2fs_update_dirty_page(struct inode *inode, struct page *page) |
|
{ |
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
|
enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
|
|
|
if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
|
!S_ISLNK(inode->i_mode)) |
|
return; |
|
|
|
spin_lock(&sbi->inode_lock[type]); |
|
if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH)) |
|
__add_dirty_inode(inode, type); |
|
inode_inc_dirty_pages(inode); |
|
spin_unlock(&sbi->inode_lock[type]); |
|
|
|
set_page_private_reference(page); |
|
} |
|
|
|
void f2fs_remove_dirty_inode(struct inode *inode) |
|
{ |
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
|
enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
|
|
|
if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
|
!S_ISLNK(inode->i_mode)) |
|
return; |
|
|
|
if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH)) |
|
return; |
|
|
|
spin_lock(&sbi->inode_lock[type]); |
|
__remove_dirty_inode(inode, type); |
|
spin_unlock(&sbi->inode_lock[type]); |
|
} |
|
|
|
int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type) |
|
{ |
|
struct list_head *head; |
|
struct inode *inode; |
|
struct f2fs_inode_info *fi; |
|
bool is_dir = (type == DIR_INODE); |
|
unsigned long ino = 0; |
|
|
|
trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir, |
|
get_pages(sbi, is_dir ? |
|
F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); |
|
retry: |
|
if (unlikely(f2fs_cp_error(sbi))) { |
|
trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, |
|
get_pages(sbi, is_dir ? |
|
F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); |
|
return -EIO; |
|
} |
|
|
|
spin_lock(&sbi->inode_lock[type]); |
|
|
|
head = &sbi->inode_list[type]; |
|
if (list_empty(head)) { |
|
spin_unlock(&sbi->inode_lock[type]); |
|
trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, |
|
get_pages(sbi, is_dir ? |
|
F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); |
|
return 0; |
|
} |
|
fi = list_first_entry(head, struct f2fs_inode_info, dirty_list); |
|
inode = igrab(&fi->vfs_inode); |
|
spin_unlock(&sbi->inode_lock[type]); |
|
if (inode) { |
|
unsigned long cur_ino = inode->i_ino; |
|
|
|
F2FS_I(inode)->cp_task = current; |
|
|
|
filemap_fdatawrite(inode->i_mapping); |
|
|
|
F2FS_I(inode)->cp_task = NULL; |
|
|
|
iput(inode); |
|
/* We need to give cpu to another writers. */ |
|
if (ino == cur_ino) |
|
cond_resched(); |
|
else |
|
ino = cur_ino; |
|
} else { |
|
/* |
|
* We should submit bio, since it exists several |
|
* wribacking dentry pages in the freeing inode. |
|
*/ |
|
f2fs_submit_merged_write(sbi, DATA); |
|
cond_resched(); |
|
} |
|
goto retry; |
|
} |
|
|
|
int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi) |
|
{ |
|
struct list_head *head = &sbi->inode_list[DIRTY_META]; |
|
struct inode *inode; |
|
struct f2fs_inode_info *fi; |
|
s64 total = get_pages(sbi, F2FS_DIRTY_IMETA); |
|
|
|
while (total--) { |
|
if (unlikely(f2fs_cp_error(sbi))) |
|
return -EIO; |
|
|
|
spin_lock(&sbi->inode_lock[DIRTY_META]); |
|
if (list_empty(head)) { |
|
spin_unlock(&sbi->inode_lock[DIRTY_META]); |
|
return 0; |
|
} |
|
fi = list_first_entry(head, struct f2fs_inode_info, |
|
gdirty_list); |
|
inode = igrab(&fi->vfs_inode); |
|
spin_unlock(&sbi->inode_lock[DIRTY_META]); |
|
if (inode) { |
|
sync_inode_metadata(inode, 0); |
|
|
|
/* it's on eviction */ |
|
if (is_inode_flag_set(inode, FI_DIRTY_INODE)) |
|
f2fs_update_inode_page(inode); |
|
iput(inode); |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static void __prepare_cp_block(struct f2fs_sb_info *sbi) |
|
{ |
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
|
struct f2fs_nm_info *nm_i = NM_I(sbi); |
|
nid_t last_nid = nm_i->next_scan_nid; |
|
|
|
next_free_nid(sbi, &last_nid); |
|
ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); |
|
ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); |
|
ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); |
|
ckpt->next_free_nid = cpu_to_le32(last_nid); |
|
} |
|
|
|
static bool __need_flush_quota(struct f2fs_sb_info *sbi) |
|
{ |
|
bool ret = false; |
|
|
|
if (!is_journalled_quota(sbi)) |
|
return false; |
|
|
|
down_write(&sbi->quota_sem); |
|
if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) { |
|
ret = false; |
|
} else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) { |
|
ret = false; |
|
} else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) { |
|
clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); |
|
ret = true; |
|
} else if (get_pages(sbi, F2FS_DIRTY_QDATA)) { |
|
ret = true; |
|
} |
|
up_write(&sbi->quota_sem); |
|
return ret; |
|
} |
|
|
|
/* |
|
* Freeze all the FS-operations for checkpoint. |
|
*/ |
|
static int block_operations(struct f2fs_sb_info *sbi) |
|
{ |
|
struct writeback_control wbc = { |
|
.sync_mode = WB_SYNC_ALL, |
|
.nr_to_write = LONG_MAX, |
|
.for_reclaim = 0, |
|
}; |
|
int err = 0, cnt = 0; |
|
|
|
/* |
|
* Let's flush inline_data in dirty node pages. |
|
*/ |
|
f2fs_flush_inline_data(sbi); |
|
|
|
retry_flush_quotas: |
|
f2fs_lock_all(sbi); |
|
if (__need_flush_quota(sbi)) { |
|
int locked; |
|
|
|
if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) { |
|
set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH); |
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); |
|
goto retry_flush_dents; |
|
} |
|
f2fs_unlock_all(sbi); |
|
|
|
/* only failed during mount/umount/freeze/quotactl */ |
|
locked = down_read_trylock(&sbi->sb->s_umount); |
|
f2fs_quota_sync(sbi->sb, -1); |
|
if (locked) |
|
up_read(&sbi->sb->s_umount); |
|
cond_resched(); |
|
goto retry_flush_quotas; |
|
} |
|
|
|
retry_flush_dents: |
|
/* write all the dirty dentry pages */ |
|
if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
|
f2fs_unlock_all(sbi); |
|
err = f2fs_sync_dirty_inodes(sbi, DIR_INODE); |
|
if (err) |
|
return err; |
|
cond_resched(); |
|
goto retry_flush_quotas; |
|
} |
|
|
|
/* |
|
* POR: we should ensure that there are no dirty node pages |
|
* until finishing nat/sit flush. inode->i_blocks can be updated. |
|
*/ |
|
down_write(&sbi->node_change); |
|
|
|
if (get_pages(sbi, F2FS_DIRTY_IMETA)) { |
|
up_write(&sbi->node_change); |
|
f2fs_unlock_all(sbi); |
|
err = f2fs_sync_inode_meta(sbi); |
|
if (err) |
|
return err; |
|
cond_resched(); |
|
goto retry_flush_quotas; |
|
} |
|
|
|
retry_flush_nodes: |
|
down_write(&sbi->node_write); |
|
|
|
if (get_pages(sbi, F2FS_DIRTY_NODES)) { |
|
up_write(&sbi->node_write); |
|
atomic_inc(&sbi->wb_sync_req[NODE]); |
|
err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO); |
|
atomic_dec(&sbi->wb_sync_req[NODE]); |
|
if (err) { |
|
up_write(&sbi->node_change); |
|
f2fs_unlock_all(sbi); |
|
return err; |
|
} |
|
cond_resched(); |
|
goto retry_flush_nodes; |
|
} |
|
|
|
/* |
|
* sbi->node_change is used only for AIO write_begin path which produces |
|
* dirty node blocks and some checkpoint values by block allocation. |
|
*/ |
|
__prepare_cp_block(sbi); |
|
up_write(&sbi->node_change); |
|
return err; |
|
} |
|
|
|
static void unblock_operations(struct f2fs_sb_info *sbi) |
|
{ |
|
up_write(&sbi->node_write); |
|
f2fs_unlock_all(sbi); |
|
} |
|
|
|
void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type) |
|
{ |
|
DEFINE_WAIT(wait); |
|
|
|
for (;;) { |
|
if (!get_pages(sbi, type)) |
|
break; |
|
|
|
if (unlikely(f2fs_cp_error(sbi))) |
|
break; |
|
|
|
if (type == F2FS_DIRTY_META) |
|
f2fs_sync_meta_pages(sbi, META, LONG_MAX, |
|
FS_CP_META_IO); |
|
else if (type == F2FS_WB_CP_DATA) |
|
f2fs_submit_merged_write(sbi, DATA); |
|
|
|
prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); |
|
io_schedule_timeout(DEFAULT_IO_TIMEOUT); |
|
} |
|
finish_wait(&sbi->cp_wait, &wait); |
|
} |
|
|
|
static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
|
{ |
|
unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; |
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&sbi->cp_lock, flags); |
|
|
|
if ((cpc->reason & CP_UMOUNT) && |
|
le32_to_cpu(ckpt->cp_pack_total_block_count) > |
|
sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks) |
|
disable_nat_bits(sbi, false); |
|
|
|
if (cpc->reason & CP_TRIMMED) |
|
__set_ckpt_flags(ckpt, CP_TRIMMED_FLAG); |
|
else |
|
__clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG); |
|
|
|
if (cpc->reason & CP_UMOUNT) |
|
__set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
|
else |
|
__clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
|
|
|
if (cpc->reason & CP_FASTBOOT) |
|
__set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); |
|
else |
|
__clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); |
|
|
|
if (orphan_num) |
|
__set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
|
else |
|
__clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
|
|
|
if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
|
__set_ckpt_flags(ckpt, CP_FSCK_FLAG); |
|
|
|
if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS)) |
|
__set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG); |
|
else |
|
__clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG); |
|
|
|
if (is_sbi_flag_set(sbi, SBI_CP_DISABLED)) |
|
__set_ckpt_flags(ckpt, CP_DISABLED_FLAG); |
|
else |
|
__clear_ckpt_flags(ckpt, CP_DISABLED_FLAG); |
|
|
|
if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK)) |
|
__set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG); |
|
else |
|
__clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG); |
|
|
|
if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) |
|
__set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); |
|
else |
|
__clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); |
|
|
|
if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) |
|
__set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); |
|
|
|
/* set this flag to activate crc|cp_ver for recovery */ |
|
__set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG); |
|
__clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG); |
|
|
|
spin_unlock_irqrestore(&sbi->cp_lock, flags); |
|
} |
|
|
|
static void commit_checkpoint(struct f2fs_sb_info *sbi, |
|
void *src, block_t blk_addr) |
|
{ |
|
struct writeback_control wbc = { |
|
.for_reclaim = 0, |
|
}; |
|
|
|
/* |
|
* pagevec_lookup_tag and lock_page again will take |
|
* some extra time. Therefore, f2fs_update_meta_pages and |
|
* f2fs_sync_meta_pages are combined in this function. |
|
*/ |
|
struct page *page = f2fs_grab_meta_page(sbi, blk_addr); |
|
int err; |
|
|
|
f2fs_wait_on_page_writeback(page, META, true, true); |
|
|
|
memcpy(page_address(page), src, PAGE_SIZE); |
|
|
|
set_page_dirty(page); |
|
if (unlikely(!clear_page_dirty_for_io(page))) |
|
f2fs_bug_on(sbi, 1); |
|
|
|
/* writeout cp pack 2 page */ |
|
err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO); |
|
if (unlikely(err && f2fs_cp_error(sbi))) { |
|
f2fs_put_page(page, 1); |
|
return; |
|
} |
|
|
|
f2fs_bug_on(sbi, err); |
|
f2fs_put_page(page, 0); |
|
|
|
/* submit checkpoint (with barrier if NOBARRIER is not set) */ |
|
f2fs_submit_merged_write(sbi, META_FLUSH); |
|
} |
|
|
|
static inline u64 get_sectors_written(struct block_device *bdev) |
|
{ |
|
return (u64)part_stat_read(bdev, sectors[STAT_WRITE]); |
|
} |
|
|
|
u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi) |
|
{ |
|
if (f2fs_is_multi_device(sbi)) { |
|
u64 sectors = 0; |
|
int i; |
|
|
|
for (i = 0; i < sbi->s_ndevs; i++) |
|
sectors += get_sectors_written(FDEV(i).bdev); |
|
|
|
return sectors; |
|
} |
|
|
|
return get_sectors_written(sbi->sb->s_bdev); |
|
} |
|
|
|
static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
|
{ |
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
|
struct f2fs_nm_info *nm_i = NM_I(sbi); |
|
unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags; |
|
block_t start_blk; |
|
unsigned int data_sum_blocks, orphan_blocks; |
|
__u32 crc32 = 0; |
|
int i; |
|
int cp_payload_blks = __cp_payload(sbi); |
|
struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); |
|
u64 kbytes_written; |
|
int err; |
|
|
|
/* Flush all the NAT/SIT pages */ |
|
f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO); |
|
|
|
/* start to update checkpoint, cp ver is already updated previously */ |
|
ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true)); |
|
ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); |
|
for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
|
ckpt->cur_node_segno[i] = |
|
cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); |
|
ckpt->cur_node_blkoff[i] = |
|
cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); |
|
ckpt->alloc_type[i + CURSEG_HOT_NODE] = |
|
curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); |
|
} |
|
for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
|
ckpt->cur_data_segno[i] = |
|
cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); |
|
ckpt->cur_data_blkoff[i] = |
|
cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); |
|
ckpt->alloc_type[i + CURSEG_HOT_DATA] = |
|
curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); |
|
} |
|
|
|
/* 2 cp + n data seg summary + orphan inode blocks */ |
|
data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false); |
|
spin_lock_irqsave(&sbi->cp_lock, flags); |
|
if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
|
__set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
|
else |
|
__clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
|
spin_unlock_irqrestore(&sbi->cp_lock, flags); |
|
|
|
orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); |
|
ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
|
orphan_blocks); |
|
|
|
if (__remain_node_summaries(cpc->reason)) |
|
ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
|
cp_payload_blks + data_sum_blocks + |
|
orphan_blocks + NR_CURSEG_NODE_TYPE); |
|
else |
|
ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
|
cp_payload_blks + data_sum_blocks + |
|
orphan_blocks); |
|
|
|
/* update ckpt flag for checkpoint */ |
|
update_ckpt_flags(sbi, cpc); |
|
|
|
/* update SIT/NAT bitmap */ |
|
get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); |
|
get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); |
|
|
|
crc32 = f2fs_checkpoint_chksum(sbi, ckpt); |
|
*((__le32 *)((unsigned char *)ckpt + |
|
le32_to_cpu(ckpt->checksum_offset))) |
|
= cpu_to_le32(crc32); |
|
|
|
start_blk = __start_cp_next_addr(sbi); |
|
|
|
/* write nat bits */ |
|
if (enabled_nat_bits(sbi, cpc)) { |
|
__u64 cp_ver = cur_cp_version(ckpt); |
|
block_t blk; |
|
|
|
cp_ver |= ((__u64)crc32 << 32); |
|
*(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver); |
|
|
|
blk = start_blk + sbi->blocks_per_seg - nm_i->nat_bits_blocks; |
|
for (i = 0; i < nm_i->nat_bits_blocks; i++) |
|
f2fs_update_meta_page(sbi, nm_i->nat_bits + |
|
(i << F2FS_BLKSIZE_BITS), blk + i); |
|
} |
|
|
|
/* write out checkpoint buffer at block 0 */ |
|
f2fs_update_meta_page(sbi, ckpt, start_blk++); |
|
|
|
for (i = 1; i < 1 + cp_payload_blks; i++) |
|
f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE, |
|
start_blk++); |
|
|
|
if (orphan_num) { |
|
write_orphan_inodes(sbi, start_blk); |
|
start_blk += orphan_blocks; |
|
} |
|
|
|
f2fs_write_data_summaries(sbi, start_blk); |
|
start_blk += data_sum_blocks; |
|
|
|
/* Record write statistics in the hot node summary */ |
|
kbytes_written = sbi->kbytes_written; |
|
kbytes_written += (f2fs_get_sectors_written(sbi) - |
|
sbi->sectors_written_start) >> 1; |
|
seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written); |
|
|
|
if (__remain_node_summaries(cpc->reason)) { |
|
f2fs_write_node_summaries(sbi, start_blk); |
|
start_blk += NR_CURSEG_NODE_TYPE; |
|
} |
|
|
|
/* update user_block_counts */ |
|
sbi->last_valid_block_count = sbi->total_valid_block_count; |
|
percpu_counter_set(&sbi->alloc_valid_block_count, 0); |
|
|
|
/* Here, we have one bio having CP pack except cp pack 2 page */ |
|
f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO); |
|
/* Wait for all dirty meta pages to be submitted for IO */ |
|
f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META); |
|
|
|
/* wait for previous submitted meta pages writeback */ |
|
f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); |
|
|
|
/* flush all device cache */ |
|
err = f2fs_flush_device_cache(sbi); |
|
if (err) |
|
return err; |
|
|
|
/* barrier and flush checkpoint cp pack 2 page if it can */ |
|
commit_checkpoint(sbi, ckpt, start_blk); |
|
f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); |
|
|
|
/* |
|
* invalidate intermediate page cache borrowed from meta inode which are |
|
* used for migration of encrypted, verity or compressed inode's blocks. |
|
*/ |
|
if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) || |
|
f2fs_sb_has_compression(sbi)) |
|
invalidate_mapping_pages(META_MAPPING(sbi), |
|
MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1); |
|
|
|
f2fs_release_ino_entry(sbi, false); |
|
|
|
f2fs_reset_fsync_node_info(sbi); |
|
|
|
clear_sbi_flag(sbi, SBI_IS_DIRTY); |
|
clear_sbi_flag(sbi, SBI_NEED_CP); |
|
clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH); |
|
|
|
spin_lock(&sbi->stat_lock); |
|
sbi->unusable_block_count = 0; |
|
spin_unlock(&sbi->stat_lock); |
|
|
|
__set_cp_next_pack(sbi); |
|
|
|
/* |
|
* redirty superblock if metadata like node page or inode cache is |
|
* updated during writing checkpoint. |
|
*/ |
|
if (get_pages(sbi, F2FS_DIRTY_NODES) || |
|
get_pages(sbi, F2FS_DIRTY_IMETA)) |
|
set_sbi_flag(sbi, SBI_IS_DIRTY); |
|
|
|
f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS)); |
|
|
|
return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0; |
|
} |
|
|
|
int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
|
{ |
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
|
unsigned long long ckpt_ver; |
|
int err = 0; |
|
|
|
if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi)) |
|
return -EROFS; |
|
|
|
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { |
|
if (cpc->reason != CP_PAUSE) |
|
return 0; |
|
f2fs_warn(sbi, "Start checkpoint disabled!"); |
|
} |
|
if (cpc->reason != CP_RESIZE) |
|
down_write(&sbi->cp_global_sem); |
|
|
|
if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) && |
|
((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) || |
|
((cpc->reason & CP_DISCARD) && !sbi->discard_blks))) |
|
goto out; |
|
if (unlikely(f2fs_cp_error(sbi))) { |
|
err = -EIO; |
|
goto out; |
|
} |
|
|
|
trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); |
|
|
|
err = block_operations(sbi); |
|
if (err) |
|
goto out; |
|
|
|
trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
|
|
|
f2fs_flush_merged_writes(sbi); |
|
|
|
/* this is the case of multiple fstrims without any changes */ |
|
if (cpc->reason & CP_DISCARD) { |
|
if (!f2fs_exist_trim_candidates(sbi, cpc)) { |
|
unblock_operations(sbi); |
|
goto out; |
|
} |
|
|
|
if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 && |
|
SIT_I(sbi)->dirty_sentries == 0 && |
|
prefree_segments(sbi) == 0) { |
|
f2fs_flush_sit_entries(sbi, cpc); |
|
f2fs_clear_prefree_segments(sbi, cpc); |
|
unblock_operations(sbi); |
|
goto out; |
|
} |
|
} |
|
|
|
/* |
|
* update checkpoint pack index |
|
* Increase the version number so that |
|
* SIT entries and seg summaries are written at correct place |
|
*/ |
|
ckpt_ver = cur_cp_version(ckpt); |
|
ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
|
|
|
/* write cached NAT/SIT entries to NAT/SIT area */ |
|
err = f2fs_flush_nat_entries(sbi, cpc); |
|
if (err) |
|
goto stop; |
|
|
|
f2fs_flush_sit_entries(sbi, cpc); |
|
|
|
/* save inmem log status */ |
|
f2fs_save_inmem_curseg(sbi); |
|
|
|
err = do_checkpoint(sbi, cpc); |
|
if (err) |
|
f2fs_release_discard_addrs(sbi); |
|
else |
|
f2fs_clear_prefree_segments(sbi, cpc); |
|
|
|
f2fs_restore_inmem_curseg(sbi); |
|
stop: |
|
unblock_operations(sbi); |
|
stat_inc_cp_count(sbi->stat_info); |
|
|
|
if (cpc->reason & CP_RECOVERY) |
|
f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver); |
|
|
|
/* update CP_TIME to trigger checkpoint periodically */ |
|
f2fs_update_time(sbi, CP_TIME); |
|
trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
|
out: |
|
if (cpc->reason != CP_RESIZE) |
|
up_write(&sbi->cp_global_sem); |
|
return err; |
|
} |
|
|
|
void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < MAX_INO_ENTRY; i++) { |
|
struct inode_management *im = &sbi->im[i]; |
|
|
|
INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); |
|
spin_lock_init(&im->ino_lock); |
|
INIT_LIST_HEAD(&im->ino_list); |
|
im->ino_num = 0; |
|
} |
|
|
|
sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
|
NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) * |
|
F2FS_ORPHANS_PER_BLOCK; |
|
} |
|
|
|
int __init f2fs_create_checkpoint_caches(void) |
|
{ |
|
ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
|
sizeof(struct ino_entry)); |
|
if (!ino_entry_slab) |
|
return -ENOMEM; |
|
f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry", |
|
sizeof(struct inode_entry)); |
|
if (!f2fs_inode_entry_slab) { |
|
kmem_cache_destroy(ino_entry_slab); |
|
return -ENOMEM; |
|
} |
|
return 0; |
|
} |
|
|
|
void f2fs_destroy_checkpoint_caches(void) |
|
{ |
|
kmem_cache_destroy(ino_entry_slab); |
|
kmem_cache_destroy(f2fs_inode_entry_slab); |
|
} |
|
|
|
static int __write_checkpoint_sync(struct f2fs_sb_info *sbi) |
|
{ |
|
struct cp_control cpc = { .reason = CP_SYNC, }; |
|
int err; |
|
|
|
down_write(&sbi->gc_lock); |
|
err = f2fs_write_checkpoint(sbi, &cpc); |
|
up_write(&sbi->gc_lock); |
|
|
|
return err; |
|
} |
|
|
|
static void __checkpoint_and_complete_reqs(struct f2fs_sb_info *sbi) |
|
{ |
|
struct ckpt_req_control *cprc = &sbi->cprc_info; |
|
struct ckpt_req *req, *next; |
|
struct llist_node *dispatch_list; |
|
u64 sum_diff = 0, diff, count = 0; |
|
int ret; |
|
|
|
dispatch_list = llist_del_all(&cprc->issue_list); |
|
if (!dispatch_list) |
|
return; |
|
dispatch_list = llist_reverse_order(dispatch_list); |
|
|
|
ret = __write_checkpoint_sync(sbi); |
|
atomic_inc(&cprc->issued_ckpt); |
|
|
|
llist_for_each_entry_safe(req, next, dispatch_list, llnode) { |
|
diff = (u64)ktime_ms_delta(ktime_get(), req->queue_time); |
|
req->ret = ret; |
|
complete(&req->wait); |
|
|
|
sum_diff += diff; |
|
count++; |
|
} |
|
atomic_sub(count, &cprc->queued_ckpt); |
|
atomic_add(count, &cprc->total_ckpt); |
|
|
|
spin_lock(&cprc->stat_lock); |
|
cprc->cur_time = (unsigned int)div64_u64(sum_diff, count); |
|
if (cprc->peak_time < cprc->cur_time) |
|
cprc->peak_time = cprc->cur_time; |
|
spin_unlock(&cprc->stat_lock); |
|
} |
|
|
|
static int issue_checkpoint_thread(void *data) |
|
{ |
|
struct f2fs_sb_info *sbi = data; |
|
struct ckpt_req_control *cprc = &sbi->cprc_info; |
|
wait_queue_head_t *q = &cprc->ckpt_wait_queue; |
|
repeat: |
|
if (kthread_should_stop()) |
|
return 0; |
|
|
|
if (!llist_empty(&cprc->issue_list)) |
|
__checkpoint_and_complete_reqs(sbi); |
|
|
|
wait_event_interruptible(*q, |
|
kthread_should_stop() || !llist_empty(&cprc->issue_list)); |
|
goto repeat; |
|
} |
|
|
|
static void flush_remained_ckpt_reqs(struct f2fs_sb_info *sbi, |
|
struct ckpt_req *wait_req) |
|
{ |
|
struct ckpt_req_control *cprc = &sbi->cprc_info; |
|
|
|
if (!llist_empty(&cprc->issue_list)) { |
|
__checkpoint_and_complete_reqs(sbi); |
|
} else { |
|
/* already dispatched by issue_checkpoint_thread */ |
|
if (wait_req) |
|
wait_for_completion(&wait_req->wait); |
|
} |
|
} |
|
|
|
static void init_ckpt_req(struct ckpt_req *req) |
|
{ |
|
memset(req, 0, sizeof(struct ckpt_req)); |
|
|
|
init_completion(&req->wait); |
|
req->queue_time = ktime_get(); |
|
} |
|
|
|
int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi) |
|
{ |
|
struct ckpt_req_control *cprc = &sbi->cprc_info; |
|
struct ckpt_req req; |
|
struct cp_control cpc; |
|
|
|
cpc.reason = __get_cp_reason(sbi); |
|
if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC) { |
|
int ret; |
|
|
|
down_write(&sbi->gc_lock); |
|
ret = f2fs_write_checkpoint(sbi, &cpc); |
|
up_write(&sbi->gc_lock); |
|
|
|
return ret; |
|
} |
|
|
|
if (!cprc->f2fs_issue_ckpt) |
|
return __write_checkpoint_sync(sbi); |
|
|
|
init_ckpt_req(&req); |
|
|
|
llist_add(&req.llnode, &cprc->issue_list); |
|
atomic_inc(&cprc->queued_ckpt); |
|
|
|
/* |
|
* update issue_list before we wake up issue_checkpoint thread, |
|
* this smp_mb() pairs with another barrier in ___wait_event(), |
|
* see more details in comments of waitqueue_active(). |
|
*/ |
|
smp_mb(); |
|
|
|
if (waitqueue_active(&cprc->ckpt_wait_queue)) |
|
wake_up(&cprc->ckpt_wait_queue); |
|
|
|
if (cprc->f2fs_issue_ckpt) |
|
wait_for_completion(&req.wait); |
|
else |
|
flush_remained_ckpt_reqs(sbi, &req); |
|
|
|
return req.ret; |
|
} |
|
|
|
int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi) |
|
{ |
|
dev_t dev = sbi->sb->s_bdev->bd_dev; |
|
struct ckpt_req_control *cprc = &sbi->cprc_info; |
|
|
|
if (cprc->f2fs_issue_ckpt) |
|
return 0; |
|
|
|
cprc->f2fs_issue_ckpt = kthread_run(issue_checkpoint_thread, sbi, |
|
"f2fs_ckpt-%u:%u", MAJOR(dev), MINOR(dev)); |
|
if (IS_ERR(cprc->f2fs_issue_ckpt)) { |
|
cprc->f2fs_issue_ckpt = NULL; |
|
return -ENOMEM; |
|
} |
|
|
|
set_task_ioprio(cprc->f2fs_issue_ckpt, cprc->ckpt_thread_ioprio); |
|
|
|
return 0; |
|
} |
|
|
|
void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi) |
|
{ |
|
struct ckpt_req_control *cprc = &sbi->cprc_info; |
|
|
|
if (cprc->f2fs_issue_ckpt) { |
|
struct task_struct *ckpt_task = cprc->f2fs_issue_ckpt; |
|
|
|
cprc->f2fs_issue_ckpt = NULL; |
|
kthread_stop(ckpt_task); |
|
|
|
flush_remained_ckpt_reqs(sbi, NULL); |
|
} |
|
} |
|
|
|
void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi) |
|
{ |
|
struct ckpt_req_control *cprc = &sbi->cprc_info; |
|
|
|
atomic_set(&cprc->issued_ckpt, 0); |
|
atomic_set(&cprc->total_ckpt, 0); |
|
atomic_set(&cprc->queued_ckpt, 0); |
|
cprc->ckpt_thread_ioprio = DEFAULT_CHECKPOINT_IOPRIO; |
|
init_waitqueue_head(&cprc->ckpt_wait_queue); |
|
init_llist_head(&cprc->issue_list); |
|
spin_lock_init(&cprc->stat_lock); |
|
}
|
|
|