Btrfs: set leave_spinning in btrfs_get_extent

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Unless it's going to read inline extents from btree leaf to page,
btrfs_get_extent won't sleep during the period of holding path lock.

This sets leave_spinning at first and sets path to blocking mode right
before reading inline extent if that's the case.  The benefit is that a
path in spinning mode typically has lower impact (faster) on waiters
rather than that in the blocking mode.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Liu Bo 2018-08-25 13:47:09 +08:00 • committed by David Sterba

parent de2c6615dc

commit e49aabd973

1 changed files with 8 additions and 0 deletions

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fs/btrfs/inode.c

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