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authorSteven Whitehouse <swhiteho@redhat.com>2006-11-01 16:05:38 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2006-11-30 10:34:30 -0500
commitbfded27ba010d1c3b0aa3843f97dc9b80de751be (patch)
tree55d0009b96ae00188fa4ab546cdcad5686a3fdde /fs/gfs2
parenta9583c7983cbba9726bfe64ee46613d654fc9e26 (diff)
[GFS2] Shrink gfs2_inode (8) - i_vn
This shrinks the size of the gfs2_inode by 8 bytes by replacing the version counter with a one bit valid/invalid flag. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/glops.c5
-rw-r--r--fs/gfs2/incore.h2
-rw-r--r--fs/gfs2/inode.c4
-rw-r--r--fs/gfs2/ops_inode.c2
4 files changed, 7 insertions, 6 deletions
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index aad45b7a927d..9c2033714b08 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -305,8 +305,9 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags)
int data = (flags & DIO_DATA);
if (meta) {
+ struct gfs2_inode *ip = gl->gl_object;
gfs2_meta_inval(gl);
- gl->gl_vn++;
+ set_bit(GIF_INVALID, &ip->i_flags);
}
if (data)
gfs2_page_inval(gl);
@@ -351,7 +352,7 @@ static int inode_go_lock(struct gfs2_holder *gh)
if (!ip)
return 0;
- if (ip->i_vn != gl->gl_vn) {
+ if (test_bit(GIF_INVALID, &ip->i_flags)) {
error = gfs2_inode_refresh(ip);
if (error)
return error;
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index c0a8c3b6a852..227a74dc5ec0 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -217,6 +217,7 @@ struct gfs2_alloc {
};
enum {
+ GIF_INVALID = 0,
GIF_QD_LOCKED = 1,
GIF_PAGED = 2,
GIF_SW_PAGED = 3,
@@ -228,7 +229,6 @@ struct gfs2_inode {
unsigned long i_flags; /* GIF_... */
- u64 i_vn;
struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
struct gfs2_glock *i_gl; /* Move into i_gh? */
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index f6177fc68320..e467780837e6 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -145,7 +145,7 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *i
if (unlikely(error))
goto fail_put;
- ip->i_vn = ip->i_gl->gl_vn - 1;
+ set_bit(GIF_INVALID, &ip->i_flags);
error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
if (unlikely(error))
goto fail_iopen;
@@ -242,7 +242,7 @@ int gfs2_inode_refresh(struct gfs2_inode *ip)
error = gfs2_dinode_in(ip, dibh->b_data);
brelse(dibh);
- ip->i_vn = ip->i_gl->gl_vn;
+ clear_bit(GIF_INVALID, &ip->i_flags);
return error;
}
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 0e4eade47bf2..b247f25effbf 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -844,7 +844,7 @@ static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
struct gfs2_holder i_gh;
int error;
- if (ip->i_vn == ip->i_gl->gl_vn)
+ if (!test_bit(GIF_INVALID, &ip->i_flags))
return generic_permission(inode, mask, gfs2_check_acl);
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);