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| author | Steven Whitehouse <swhiteho@redhat.com> | 2006-11-01 16:05:38 -0500 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-11-30 10:34:30 -0500 |
| commit | bfded27ba010d1c3b0aa3843f97dc9b80de751be (patch) | |
| tree | 55d0009b96ae00188fa4ab546cdcad5686a3fdde /fs/gfs2 | |
| parent | a9583c7983cbba9726bfe64ee46613d654fc9e26 (diff) | |
| download | linux-bfded27ba010d1c3b0aa3843f97dc9b80de751be.tar.gz linux-bfded27ba010d1c3b0aa3843f97dc9b80de751be.tar.bz2 linux-bfded27ba010d1c3b0aa3843f97dc9b80de751be.zip | |
[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.c | 5 | ||||
| -rw-r--r-- | fs/gfs2/incore.h | 2 | ||||
| -rw-r--r-- | fs/gfs2/inode.c | 4 | ||||
| -rw-r--r-- | fs/gfs2/ops_inode.c | 2 |
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); |