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...cur_offset are both larger than i_size. Otherwise if actual_len is < i_size and cur_offset > i_size we may end up setting wrong i_size value fs/btrfs/inode.c | 17 ++++++++++++----- 1 files changed, 12 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 5440bab..ac4cb6b 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -5789,7 +5789,7 @@ out_fail: } static int prealloc_file_range(struct inode *inode, u64 start, u64 end, - u64 alloc_hint, int mode) + u64 alloc_hint, int mode, loff_t actual_len) { struct btrfs_trans_handle *trans;...

...his locally and it fixes the problem. Thanks to Tomas Carnecky for helping me track this down initially. Signed-off-by: Josef Bacik <josef@redhat.com> --- fs/btrfs/inode.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 5440bab..f5d9384 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3796,6 +3796,12 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) if (location.type == BTRFS_INODE_ITEM_KEY) { inode = btrfs_iget(dir->i_sb, &location, root); + if (unlikely(root->clean_...