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authorSteven Whitehouse <swhiteho@redhat.com>2008-09-18 13:53:59 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2008-09-18 13:53:59 +0100
commit719ee344675c2efed9115934f19aa66a526b6e5b (patch)
tree7f9502d696a09eaf5eba0a0d3fa35557ffd3c503 /fs/gfs2/ops_fstype.c
parent37ec89e83c4ca98323fe74f139301ff3949cfdb6 (diff)
downloadconfigs-719ee344675c2efed9115934f19aa66a526b6e5b.tar.gz
GFS2: high time to take some time over atime
Until now, we've used the same scheme as GFS1 for atime. This has failed since atime is a per vfsmnt flag, not a per fs flag and as such the "noatime" flag was not getting passed down to the filesystems. This patch removes all the "special casing" around atime updates and we simply use the VFS's atime code. The net result is that GFS2 will now support all the same atime related mount options of any other filesystem on a per-vfsmnt basis. We do lose the "lazy atime" updates, but we gain "relatime". We could add lazy atime to the VFS at a later date, if there is a requirement for that variant still - I suspect relatime will be enough. Also we lose about 100 lines of code after this patch has been applied, and I have a suspicion that it will speed things up a bit, even when atime is "on". So it seems like a nice clean up as well. From a user perspective, everything stays the same except the loss of the per-fs atime quantum tweekable (ought to be per-vfsmnt at the very least, and to be honest I don't think anybody ever used it) and that a number of options which were ignored before now work correctly. Please let me know if you've got any comments. I'm pushing this out early so that you can all see what my plans are. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/ops_fstype.c')
-rw-r--r--fs/gfs2/ops_fstype.c23
1 files changed, 5 insertions, 18 deletions
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index ae35f097aa6..b117fcf2c4f 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -70,7 +70,6 @@ static void gfs2_tune_init(struct gfs2_tune *gt)
gt->gt_quota_scale_den = 1;
gt->gt_quota_cache_secs = 300;
gt->gt_quota_quantum = 60;
- gt->gt_atime_quantum = 3600;
gt->gt_new_files_jdata = 0;
gt->gt_max_readahead = 1 << 18;
gt->gt_stall_secs = 600;
@@ -135,22 +134,6 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
return sdp;
}
-static void init_vfs(struct super_block *sb, unsigned noatime)
-{
- struct gfs2_sbd *sdp = sb->s_fs_info;
-
- sb->s_magic = GFS2_MAGIC;
- sb->s_op = &gfs2_super_ops;
- sb->s_export_op = &gfs2_export_ops;
- sb->s_time_gran = 1;
- sb->s_maxbytes = MAX_LFS_FILESIZE;
-
- if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME))
- set_bit(noatime, &sdp->sd_flags);
-
- /* Don't let the VFS update atimes. GFS2 handles this itself. */
- sb->s_flags |= MS_NOATIME | MS_NODIRATIME;
-}
/**
* gfs2_check_sb - Check superblock
@@ -1100,7 +1083,11 @@ static int fill_super(struct super_block *sb, void *data, int silent)
goto fail;
}
- init_vfs(sb, SDF_NOATIME);
+ sb->s_magic = GFS2_MAGIC;
+ sb->s_op = &gfs2_super_ops;
+ sb->s_export_op = &gfs2_export_ops;
+ sb->s_time_gran = 1;
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
/* Set up the buffer cache and fill in some fake block size values
to allow us to read-in the on-disk superblock. */