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| author | Goldwyn Rodrigues <rgoldwyn@gmail.com> | 2010-06-28 10:04:32 -0500 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2010-09-10 09:18:15 -0700 |
| commit | 5e98d492406818e6a94c0ba54c61f59d40cefa4a (patch) | |
| tree | 9eec0813194dd2192f6ae05d2f344e7839d2ab44 /fs/ocfs2/inode.c | |
| parent | b4d693fcc5fe99ed211addb5c6a0f8398f0b266e (diff) | |
| download | linux-5e98d492406818e6a94c0ba54c61f59d40cefa4a.tar.bz2 | |
Track negative entries v3
Track negative dentries by recording the generation number of the parent
directory in d_fsdata. The generation number for the parent directory is
recorded in the inode_info, which increments every time the lock on the
directory is dropped.
If the generation number of the parent directory and the negative dentry
matches, there is no need to perform the revalidate, else a revalidate
is forced. This improves performance in situations where nodes look for
the same non-existent file multiple times.
Thanks Mark for explaining the DLM sequence.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs/ocfs2/inode.c')
| -rw-r--r-- | fs/ocfs2/inode.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index eece3e05d9d0..f935fd6600dd 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -335,6 +335,7 @@ void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, else inode->i_fop = &ocfs2_dops_no_plocks; i_size_write(inode, le64_to_cpu(fe->i_size)); + OCFS2_I(inode)->ip_dir_lock_gen = 1; break; case S_IFLNK: if (ocfs2_inode_is_fast_symlink(inode)) |