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authorQu Wenruo <wqu@suse.com>2025-04-04 10:10:51 +1030
committerDavid Sterba <dsterba@suse.com>2025-05-15 14:30:43 +0200
commit2b14b74b992187933069cb3316c691dbd5707f47 (patch)
tree32d72d4296468a000ba94dd77efab9d057a95042 /fs/btrfs/dev-replace.c
parente1fcad644b405928b4bf74b1cfd9322008992019 (diff)
btrfs: use folio_contains() for EOF detection
Currently we use the following pattern to detect if the folio contains the end of a file: if (folio->index == end_index) folio_zero_range(); But that only works if the folio is page sized. For the following case, it will not work and leave the range beyond EOF uninitialized: The page size is 4K, and the fs block size is also 4K. 16K 20K 24K | | | | | EOF at 22K And we have a large folio sized 8K at file offset 16K. In that case, the old "folio->index == end_index" will not work, thus the range [22K, 24K) will not be zeroed out. Fix the following call sites which use the above pattern: - add_ra_bio_pages() - extent_writepage() Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/dev-replace.c')
0 files changed, 0 insertions, 0 deletions