summaryrefslogtreecommitdiff
path: root/fs/quota_v2.c
diff options
context:
space:
mode:
authorChris Mason <chris.mason@oracle.com>2009-02-04 14:24:25 (GMT)
committerChris Mason <chris.mason@oracle.com>2009-02-04 14:24:25 (GMT)
commitc487685d7c18a8481900755aa5c56a7a74193101 (patch)
treef2ff6c059e24d7fdf2e1fff498bbef0bb90bfbfc /fs/quota_v2.c
parent3935127c50c84106d654ef14962cff28c660bc62 (diff)
downloadlinux-fsl-qoriq-c487685d7c18a8481900755aa5c56a7a74193101.tar.xz
Btrfs: hash_lock is no longer needed
Before metadata is written to disk, it is updated to reflect that writeout has begun. Once this update is done, the block must be cow'd before it can be modified again. This update was originally synchronized by using a per-fs spinlock. Today the buffers for the metadata blocks are locked before writeout begins, and everyone that tests the flag has the buffer locked as well. So, the per-fs spinlock (called hash_lock for no good reason) is no longer required. Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/quota_v2.c')
0 files changed, 0 insertions, 0 deletions