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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-08 11:30:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-08 11:30:05 -0700 |
| commit | dd727dad37297f497dc69ac00182abf9651e7b6c (patch) | |
| tree | c4371206b2b7000f92b974df6a3bfe910b2a8635 /mm/page-writeback.c | |
| parent | 13e0988140374123bead1dd27c287354cb95108e (diff) | |
| parent | 17f423b5160767a8ec43b0602767e5f4d3ecd083 (diff) | |
| download | linux-dd727dad37297f497dc69ac00182abf9651e7b6c.tar.gz | |
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/page-writeback.c')
| -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; } |