diff options
Diffstat (limited to 'fs/ocfs2/dir.c')
| -rw-r--r-- | fs/ocfs2/dir.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index 5efea44d780..baad2aa27c1 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -82,6 +82,7 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir) struct inode *inode = filp->f_dentry->d_inode; struct super_block * sb = inode->i_sb; unsigned int ra_sectors = 16; + int lock_level = 0; mlog_entry("dirino=%llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); @@ -89,7 +90,15 @@ int ocfs2_readdir(struct file * filp, void * dirent, filldir_t filldir) stored = 0; bh = NULL; - error = ocfs2_meta_lock(inode, NULL, 0); + error = ocfs2_meta_lock_atime(inode, filp->f_vfsmnt, &lock_level); + if (lock_level && error >= 0) { + /* We release EX lock which used to update atime + * and get PR lock again to reduce contention + * on commonly accessed directories. */ + ocfs2_meta_unlock(inode, 1); + lock_level = 0; + error = ocfs2_meta_lock(inode, NULL, 0); + } if (error < 0) { if (error != -ENOENT) mlog_errno(error); @@ -198,7 +207,7 @@ revalidate: stored = 0; bail: - ocfs2_meta_unlock(inode, 0); + ocfs2_meta_unlock(inode, lock_level); bail_nolock: mlog_exit(stored); |