Btrfs: two stage dirty block group writeout

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Block group cache writeout is currently waiting on the pages for each
block group cache before moving on to writing the next one.  This commit
switches things around to send down all the caches and then wait on them
in batches.

The end result is much faster, since we're keeping the disk pipeline
full.

Signed-off-by: Chris Mason <clm@fb.com>

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This commit is contained in:

Chris Mason 2015-04-04 17:14:42 -07:00

parent 4c6d1d85ad

commit c9dc4c6578

4 changed files with 170 additions and 32 deletions

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6

fs/btrfs/ctree.h

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57

fs/btrfs/extent-tree.c

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131

fs/btrfs/free-space-cache.c

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8

fs/btrfs/free-space-cache.h

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