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...btrfs_ordered_update_i_size() may return 1, but btrfs_endio_direct_write() mistakenly takes it as an error. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> --- fs/btrfs/inode.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 0ccc743..3bd35fe 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -5785,8 +5785,7 @@ again: if (test_bit(BTRFS_ORDERED_NOCOW, &ordered->flags)) { ret = btrfs_ordered_update_i_size(inode, 0, ordered); if (!ret) - ret = btrfs_update_inode(trans, root, inode); - err = ret; + err = b...

...it a/fs/btrfs/file.c b/fs/btrfs/file.c index e7872e4..3f3b4a8 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1150,7 +1150,6 @@ fail: faili--; } return err; - } static noinline ssize_t __btrfs_buffered_write(struct file *file, diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 0ccc743..d42bea4 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -882,7 +882,7 @@ static noinline int cow_file_range(struct inode *inode, */ op = unlock ? EXTENT_CLEAR_UNLOCK_PAGE : 0; op |= EXTENT_CLEAR_UNLOCK | EXTENT_CLEAR_DELALLOC | - EXTENT_SET_PRIVATE2; + EXTENT_SET_PRIVATE...

This is a first draft of a subvolume quota implementation. It is possible to limit subvolumes and any group of subvolumes and also to track the amount of space that will get freed when deleting snapshots. The current version is functionally incomplete, with the main missing feature being the initial scan and rescan of an existing filesystem. I put some effort into writing an introduction into