- 14 Feb, 2017 40 commits
-
-
Liu Bo authored
Dio writes can update i_size in btrfs_get_blocks_direct when it writes to offset beyond EOF so that endio can update disk_i_size correctly (because we don't udpate disk_i_size beyond i_size). However, when truncating down a file, we firstly update i_size and then wait for in-flight lockless dio reads/writes, according to the above, i_size may have been changed in dio writes, and file extents don't get truncated. For lockless dio writes are always overwrites, i_size is not supposed to be changed, so this adds a check to filter out this case. The race could be reproduced by fstests/generic/299 with patch "Btrfs: fix btrfs_ordered_update_i_size to update disk_i_size properly" applied. Signed-off-by:
Liu Bo <bo.li.liu@oracle.com> Signed-off-by:
David Sterba <dsterba@suse.com>
-
Liu Bo authored
Since we have a good helper entry_end, use it for ordered extent. Signed-off-by:
-
Liu Bo authored
The comment about "page_mkwrite gets called every time the page is dirtied" in btrfs_page_mkwrite is not correct, it only gets called the first time the page gets dirtied after the page faults in. However, we don't need to touch the code because it works well, although the proper logic is to check if delalloc bits has been set and if so, go free reserved space, if not, set the delalloc bits for dirty page range. Signed-off-by:
-
Liu Bo authored
btrfs_ordered_update_i_size can be called by truncate and endio, but only endio takes ordered_extent which contains the completed IO. while truncating down a file, if there are some in-flight IOs, btrfs_ordered_update_i_size in endio will set disk_i_size to @orig_offset that is zero. If truncating-down fails somehow, we try to recover in memory isize with this zero'd disk_i_size. Fix it by only updating disk_i_size with @orig_offset when btrfs_ordered_update_i_size is not called from endio while truncating down and waiting for in-flight IOs completing their work before recover in-memory size. Besides fixing the above issue, add an assertion for last_size to double check we truncate down to the desired size. Signed-off-by:
-
David Sterba authored
This goes as a separate patch because fixing that inside the patches caused too many many conflicts. Signed-off-by: -
Nikolay Borisov authored
Signed-off-by:
Nikolay Borisov <n.borisov.lkml@gmail.com> Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
Signed-off-by:
-
Nikolay Borisov authored
This function is internal to btrfs and doesn't really deal with any VFS members, as such it needn't take a struct inode refrence but btrfs_inode. Signed-off-by:
-
