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| author |   Chao Yu <chao2.yu@samsung.com> | 2016-02-24 17:20:44 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2016-02-25 17:27:03 -0800 |
| commit | 80dd9c0e9db220697301e76b7b61f580ad9e8ecd (patch) | |
| tree | e56ed4bab3b42033943ae3fdd86353e5f0db9936 /fs/f2fs/checkpoint.c | |
| parent | f2fs: avoid hungtask problem caused by losing wake_up (diff) | |
| download | linux-dev-80dd9c0e9db220697301e76b7b61f580ad9e8ecd.tar.xz linux-dev-80dd9c0e9db220697301e76b7b61f580ad9e8ecd.zip | |
f2fs: fix incorrect upper bound when iterating inode mapping tree
1. Inode mapping tree can index page in range of [0, ULONG_MAX], however,
in some places, f2fs only search or iterate page in ragne of [0, LONG_MAX],
result in miss hitting in page cache.
2. filemap_fdatawait_range accepts range parameters in unit of bytes, so
the max range it covers should be [0, LLONG_MAX], if we use [0, LONG_MAX]
as range for waiting on writeback, big number of pages will not be covered.
This patch corrects above two issues.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/checkpoint.c')
| -rw-r--r-- | fs/f2fs/checkpoint.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index f55355d7d6b1..b32ecc954229 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -282,7 +282,7 @@ long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, long nr_to_write) { struct address_space *mapping = META_MAPPING(sbi); - pgoff_t index = 0, end = LONG_MAX, prev = LONG_MAX; + pgoff_t index = 0, end = ULONG_MAX, prev = ULONG_MAX; struct pagevec pvec; long nwritten = 0; struct writeback_control wbc = { @@ -305,7 +305,7 @@ long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, for (i = 0; i < nr_pages; i++) { struct page *page = pvec.pages[i]; - if (prev == LONG_MAX) + if (prev == ULONG_MAX) prev = page->index - 1; if (nr_to_write != LONG_MAX && page->index != prev + 1) { pagevec_release(&pvec); @@ -1077,8 +1077,8 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) if (unlikely(f2fs_cp_error(sbi))) return -EIO; - filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); - filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); + filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LLONG_MAX); + filemap_fdatawait_range(META_MAPPING(sbi), 0, LLONG_MAX); /* update user_block_counts */ sbi->last_valid_block_count = sbi->total_valid_block_count; |