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| author | Theodore Ts'o <tytso@mit.edu> | 2018-12-25 04:27:08 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2018-12-25 04:27:08 +0300 |
| commit | 812c0cab2c0dfad977605dbadf9148490ca5d93f (patch) | |
| tree | 0a894d93e2d1bf7ee5364ea97b7d5fe10b95f091 /fs/ext4 | |
| parent | 18f2c4fcebf2582f96cbd5f2238f4f354a0e4847 (diff) | |
| download | linux-812c0cab2c0dfad977605dbadf9148490ca5d93f.tar.xz | |
ext4: make sure enough credits are reserved for dioread_nolock writes
There are enough credits reserved for most dioread_nolock writes;
however, if the extent tree is sufficiently deep, and/or quota is
enabled, the code was not allowing for all eventualities when
reserving journal credits for the unwritten extent conversion.
This problem can be seen using xfstests ext4/034:
WARNING: CPU: 1 PID: 257 at fs/ext4/ext4_jbd2.c:271 __ext4_handle_dirty_metadata+0x10c/0x180
Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work
RIP: 0010:__ext4_handle_dirty_metadata+0x10c/0x180
...
EXT4-fs: ext4_free_blocks:4938: aborting transaction: error 28 in __ext4_handle_dirty_metadata
EXT4: jbd2_journal_dirty_metadata failed: handle type 11 started at line 4921, credits 4/0, errcode -28
EXT4-fs error (device dm-1) in ext4_free_blocks:4950: error 28
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/inode.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 9affabd07682..165ff331d998 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2778,7 +2778,8 @@ static int ext4_writepages(struct address_space *mapping, * We may need to convert up to one extent per block in * the page and we may dirty the inode. */ - rsv_blocks = 1 + (PAGE_SIZE >> inode->i_blkbits); + rsv_blocks = 1 + ext4_chunk_trans_blocks(inode, + PAGE_SIZE >> inode->i_blkbits); } /* |