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Btrfs: Lower contention on the csum mutex

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This takes the csum mutex deeper in the call chain and releases it
more often.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-08-15 15:34:18 -04:00
parent 4854ddd0ed
commit 53863232ef
4 changed files with 22 additions and 8 deletions
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9
fs/btrfs/disk-io.c
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@ -1386,7 +1386,14 @@ struct btrfs_root *open_ctree(struct super_block *sb,
* devices
*/
fs_info->submit_workers.idle_thresh = 64;
fs_info->workers.idle_thresh = 32;
/* fs_info->workers is responsible for checksumming file data
* blocks and metadata. Using a larger idle thresh allows each
* worker thread to operate on things in roughly the order they
* were sent by the writeback daemons, improving overall locality
* of the IO going down the pipe.
*/
fs_info->workers.idle_thresh = 128;
btrfs_init_workers(&fs_info->fixup_workers, "fixup", 1);
btrfs_init_workers(&fs_info->endio_workers, "endio",