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| author | Yan, Zheng <zyan@redhat.com> | 2016-06-06 16:01:39 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-07-28 02:55:39 +0200 |
| commit | 774a6a118c70f8c11fcfe636032b5016ad71a746 (patch) | |
| tree | 8c1380f9b9fe2b6db6360b68f4aad373be01072b /fs/ceph/ioctl.c | |
| parent | a22bd5ffae2d22c054c832fe0d60976ed9e4a49d (diff) | |
| download | linux-774a6a118c70f8c11fcfe636032b5016ad71a746.tar.gz linux-774a6a118c70f8c11fcfe636032b5016ad71a746.tar.bz2 linux-774a6a118c70f8c11fcfe636032b5016ad71a746.zip | |
ceph: reduce i_nr_by_mode array size
Track usage count for individual fmode bit. This can reduce the
array size by half.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs/ceph/ioctl.c')
| -rw-r--r-- | fs/ceph/ioctl.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index 6a30101b55ef..7d752d53353a 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -250,9 +250,8 @@ static long ceph_ioctl_lazyio(struct file *file) if ((fi->fmode & CEPH_FILE_MODE_LAZY) == 0) { spin_lock(&ci->i_ceph_lock); - ci->i_nr_by_mode[fi->fmode]--; fi->fmode |= CEPH_FILE_MODE_LAZY; - ci->i_nr_by_mode[fi->fmode]++; + ci->i_nr_by_mode[ffs(CEPH_FILE_MODE_LAZY)]++; spin_unlock(&ci->i_ceph_lock); dout("ioctl_layzio: file %p marked lazy\n", file); |