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Subject[PATCH 0/8] Per-bdi writeback flusher threads v17
Date
Hi,

Continuing the daily releases of this patchset to ensure it's in
solid shape for 2.6.32, here's version 17. Changes since v16:

- Looking at the callers of sb writeback, WB_SYNC_ALL (data integrity)
writeback already has the super_block pinned and doesn't require
any further actions. So go back to the down_read_trylock() method
of pinning the sb and also check for sb->s_root for WB_SYNC_NONE
writeout. This is all packaged into pin_sb_for_writeback() and
unpin_sb_for_writeback().
- Get rid of exported generic_sync_sb_inodes() and export sync_inodes_sb()
for non-integrity writeback and sync_inodes_sb_wait() for integrity
writeback, as suggested by hch.
- Folded the 'move sb argument to wbc' into the main patch, with the
addition of the above sync_inodes_sb()/sync_inodes_sb_wait() it
didn't make sense to keep it separate anymore because wbc isn't
passed in outside of the code.
- Update the changelog on the main patch, the one switching to per-bdi
flushing.

Please review, thanks!

b/block/blk-core.c | 1
b/drivers/block/aoe/aoeblk.c | 1
b/drivers/char/mem.c | 1
b/drivers/staging/pohmelfs/inode.c | 9
b/fs/btrfs/disk-io.c | 1
b/fs/buffer.c | 2
b/fs/char_dev.c | 1
b/fs/configfs/inode.c | 1
b/fs/fs-writeback.c | 998 +++++++++++++++++++++--------
b/fs/fuse/inode.c | 1
b/fs/hugetlbfs/inode.c | 1
b/fs/nfs/client.c | 1
b/fs/ocfs2/dlm/dlmfs.c | 1
b/fs/ramfs/inode.c | 1
b/fs/super.c | 3
b/fs/sync.c | 10
b/fs/sysfs/inode.c | 1
b/fs/ubifs/budget.c | 16
b/fs/ubifs/super.c | 9
b/include/linux/backing-dev.h | 56 +
b/include/linux/fs.h | 8
b/include/linux/writeback.h | 23
b/kernel/cgroup.c | 1
b/kernel/sysctl.c | 8
b/mm/Makefile | 2
b/mm/backing-dev.c | 379 ++++++++++-
b/mm/page-writeback.c | 174 +----
b/mm/swap_state.c | 1
b/mm/vmscan.c | 2
mm/pdflush.c | 269 -------
30 files changed, 1238 insertions(+), 744 deletions(-)
--
Jens Axboe



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