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author | Hugh Dickins <hughd@google.com> | 2011-07-25 17:12:26 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-25 20:57:10 -0700 |
commit | d515afe88a32e567c550e3db914f3e378f86453a (patch) | |
tree | 0129002decdd5c1f8bcb521aacdba73e0d1699c3 /Documentation/DocBook/tracepoint.tmpl | |
parent | d0823576bf4b8eafce1b56f98613465a0352a376 (diff) |
tmpfs: no need to use i_lock
2.6.36's 7e496299d4d2 ("tmpfs: make tmpfs scalable with percpu_counter for
used blocks") to make tmpfs scalable with percpu_counter used
inode->i_lock in place of sbinfo->stat_lock around i_blocks updates; but
that was adverse to scalability, and unnecessary, since info->lock is
already held there in the fast paths.
Remove those uses of i_lock, and add info->lock in the three error paths
where it's then needed across shmem_free_blocks(). It's not actually
needed across shmem_unacct_blocks(), but they're so often paired that it
looks wrong to split them apart.
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/DocBook/tracepoint.tmpl')
0 files changed, 0 insertions, 0 deletions