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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-08 21:30:05 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-08 21:30:05 +0300 |
| commit | dd727dad37297f497dc69ac00182abf9651e7b6c (patch) | |
| tree | c4371206b2b7000f92b974df6a3bfe910b2a8635 /mm | |
| parent | 13e0988140374123bead1dd27c287354cb95108e (diff) | |
| parent | 17f423b5160767a8ec43b0602767e5f4d3ecd083 (diff) | |
| download | linux-dd727dad37297f497dc69ac00182abf9651e7b6c.tar.xz | |
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
- add GETFSMAP support
- some performance improvements for very large file systems and for
random write workloads into a preallocated file
- bug fixes and cleanups.
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
jbd2: cleanup write flags handling from jbd2_write_superblock()
ext4: mark superblock writes synchronous for nobarrier mounts
ext4: inherit encryption xattr before other xattrs
ext4: replace BUG_ON with WARN_ONCE in ext4_end_bio()
ext4: avoid unnecessary transaction stalls during writeback
ext4: preload block group descriptors
ext4: make ext4_shutdown() static
ext4: support GETFSMAP ioctls
vfs: add common GETFSMAP ioctl definitions
ext4: evict inline data when writing to memory map
ext4: remove ext4_xattr_check_entry()
ext4: rename ext4_xattr_check_names() to ext4_xattr_check_entries()
ext4: merge ext4_xattr_list() into ext4_listxattr()
ext4: constify static data that is never modified
ext4: trim return value and 'dir' argument from ext4_insert_dentry()
jbd2: fix dbench4 performance regression for 'nobarrier' mounts
jbd2: Fix lockdep splat with generic/270 test
mm: retry writepages() on ENOMEM when doing an data integrity writeback
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page-writeback.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 2359608d2568..143c1c25d680 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2352,10 +2352,16 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc) if (wbc->nr_to_write <= 0) return 0; - if (mapping->a_ops->writepages) - ret = mapping->a_ops->writepages(mapping, wbc); - else - ret = generic_writepages(mapping, wbc); + while (1) { + if (mapping->a_ops->writepages) + ret = mapping->a_ops->writepages(mapping, wbc); + else + ret = generic_writepages(mapping, wbc); + if ((ret != -ENOMEM) || (wbc->sync_mode != WB_SYNC_ALL)) + break; + cond_resched(); + congestion_wait(BLK_RW_ASYNC, HZ/50); + } return ret; } |