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authorIngo Molnar <mingo@kernel.org>2017-08-10 16:49:46 +0200
committerIngo Molnar <mingo@kernel.org>2017-08-10 16:49:46 +0200
commit636bf35880e5a79c2ecb10640137bbd9a4681cb7 (patch)
tree919ea9ac007b72acb92a99fb7e28c8238a69573f /fs/ext4/file.c
parent276c87054751bb6adfa160a6e68e47b97592a897 (diff)
parent8d31f80eb38819e4f2905ad21c0e8998382a08f7 (diff)
Merge branch 'linus' into x86/platform, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/ext4/file.c')
-rw-r--r--fs/ext4/file.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 58294c9a7e1d..0d7cf0cc9b87 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -537,6 +537,8 @@ static int ext4_find_unwritten_pgoff(struct inode *inode,
lastoff = page_offset(page);
bh = head = page_buffers(page);
do {
+ if (lastoff + bh->b_size <= startoff)
+ goto next;
if (buffer_uptodate(bh) ||
buffer_unwritten(bh)) {
if (whence == SEEK_DATA)
@@ -551,6 +553,7 @@ static int ext4_find_unwritten_pgoff(struct inode *inode,
unlock_page(page);
goto out;
}
+next:
lastoff += bh->b_size;
bh = bh->b_this_page;
} while (bh != head);