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Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block

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Pull cgroup writeback support from Jens Axboe:
 "This is the big pull request for adding cgroup writeback support.

  This code has been in development for a long time, and it has been
  simmering in for-next for a good chunk of this cycle too.  This is one
  of those problems that has been talked about for at least half a
  decade, finally there's a solution and code to go with it.

  Also see last weeks writeup on LWN:

        http://lwn.net/Articles/648292/"

* 'for-4.2/writeback' of git://git.kernel.dk/linux-block: (85 commits)
  writeback, blkio: add documentation for cgroup writeback support
  vfs, writeback: replace FS_CGROUP_WRITEBACK with SB_I_CGROUPWB
  writeback: do foreign inode detection iff cgroup writeback is enabled
  v9fs: fix error handling in v9fs_session_init()
  bdi: fix wrong error return value in cgwb_create()
  buffer: remove unusued 'ret' variable
  writeback: disassociate inodes from dying bdi_writebacks
  writeback: implement foreign cgroup inode bdi_writeback switching
  writeback: add lockdep annotation to inode_to_wb()
  writeback: use unlocked_inode_to_wb transaction in inode_congested()
  writeback: implement unlocked_inode_to_wb transaction and use it for stat updates
  writeback: implement [locked_]inode_to_wb_and_lock_list()
  writeback: implement foreign cgroup inode detection
  writeback: make writeback_control track the inode being written back
  writeback: relocate wb[_try]_get(), wb_put(), inode_{attach|detach}_wb()
  mm: vmscan: disable memcg direct reclaim stalling if cgroup writeback support is in use
  writeback: implement memcg writeback domain based throttling
  writeback: reset wb_domain->dirty_limit[_tstmp] when memcg domain size changes
  writeback: implement memcg wb_domain
  writeback: update wb_over_bg_thresh() to use wb_domain aware operations
  ...
This commit is contained in:
Linus Torvalds 2015-06-25 16:00:17 -07:00
commit e4bc13adfd
74 changed files with 3890 additions and 1242 deletions
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12
fs/fuse/file.c
View file

@ -1445,9 +1445,9 @@ static void fuse_writepage_finish(struct fuse_conn *fc, struct fuse_req *req)
list_del(&req->writepages_entry);
for (i = 0; i < req->num_pages; i++) {
dec_bdi_stat(bdi, BDI_WRITEBACK);
dec_wb_stat(&bdi->wb, WB_WRITEBACK);
dec_zone_page_state(req->pages[i], NR_WRITEBACK_TEMP);
bdi_writeout_inc(bdi);
wb_writeout_inc(&bdi->wb);
}
wake_up(&fi->page_waitq);
}
@ -1634,7 +1634,7 @@ static int fuse_writepage_locked(struct page *page)
req->end = fuse_writepage_end;
req->inode = inode;
inc_bdi_stat(inode_to_bdi(inode), BDI_WRITEBACK);
inc_wb_stat(&inode_to_bdi(inode)->wb, WB_WRITEBACK);
inc_zone_page_state(tmp_page, NR_WRITEBACK_TEMP);
spin_lock(&fc->lock);
@ -1749,9 +1749,9 @@ static bool fuse_writepage_in_flight(struct fuse_req *new_req,
copy_highpage(old_req->pages[0], page);
spin_unlock(&fc->lock);
dec_bdi_stat(bdi, BDI_WRITEBACK);
dec_wb_stat(&bdi->wb, WB_WRITEBACK);
dec_zone_page_state(page, NR_WRITEBACK_TEMP);
bdi_writeout_inc(bdi);
wb_writeout_inc(&bdi->wb);
fuse_writepage_free(fc, new_req);
fuse_request_free(new_req);
goto out;
@ -1848,7 +1848,7 @@ static int fuse_writepages_fill(struct page *page,
req->page_descs[req->num_pages].offset = 0;
req->page_descs[req->num_pages].length = PAGE_SIZE;
inc_bdi_stat(inode_to_bdi(inode), BDI_WRITEBACK);
inc_wb_stat(&inode_to_bdi(inode)->wb, WB_WRITEBACK);
inc_zone_page_state(tmp_page, NR_WRITEBACK_TEMP);
err = 0;