diff options
| author | Jan Kara | 2015-12-07 20:34:49 +0100 |
|---|---|---|
| committer | Theodore Ts'o | 2015-12-07 20:34:49 +0100 |
| commit | 011278485ecc3cd2a3954b5d4c73101d919bf1fa (patch) | |
| tree | 740938e00aa0c972db386b5576656e646c02e36d /fs/ext4/ext4.h | |
| parent | ext4: fix races between buffered IO and collapse / insert range (diff) | |
| download | kernel-qcow2-linux-011278485ecc3cd2a3954b5d4c73101d919bf1fa.tar.gz kernel-qcow2-linux-011278485ecc3cd2a3954b5d4c73101d919bf1fa.tar.xz kernel-qcow2-linux-011278485ecc3cd2a3954b5d4c73101d919bf1fa.zip | |
ext4: fix races of writeback with punch hole and zero range
When doing delayed allocation, update of on-disk inode size is postponed
until IO submission time. However hole punch or zero range fallocate
calls can end up discarding the tail page cache page and thus on-disk
inode size would never be properly updated.
Make sure the on-disk inode size is updated before truncating page
cache.
Signed-off-by: Jan Kara <jack@suse.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 348a5ff4a0e2..80f76f092079 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2858,6 +2858,9 @@ static inline int ext4_update_inode_size(struct inode *inode, loff_t newsize) return changed; } +int ext4_update_disksize_before_punch(struct inode *inode, loff_t offset, + loff_t len); + struct ext4_group_info { unsigned long bb_state; struct rb_root bb_free_root; |