[GFS2] Fix bug in directory code and tidy up
Due to a typo, the dir leaf split operation was (for the first
split in a directory) writing the new hash vaules at the
wrong offset. This is now fixed.
Also some other tidy ups are included:
- We use GFS2's hash function for dentries (see ops_dentry.c) so that
we don't have to keep recalculating the hash values.
- A lot of common code is eliminated between the various directory
lookup routines.
- Better error checking on directory lookup (previously different
routines checked for different errors)
- The leaf split operation has a couple of redundant operations
removed from it, so it should be faster.
There is still further scope for further clean ups in the directory
code, and readdir in particular could do with slimming down a bit.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 8d6d941..8d2c557 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -379,11 +379,10 @@
goto fail_recoverd;
}
- error = gfs2_lookup_simple(sdp->sd_master_dir, "jindex",
- &sdp->sd_jindex);
- if (error) {
+ sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex");
+ if (IS_ERR(sdp->sd_jindex)) {
fs_err(sdp, "can't lookup journal index: %d\n", error);
- return error;
+ return PTR_ERR(sdp->sd_jindex);
}
ip = sdp->sd_jindex->u.generic_ip;
set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
@@ -531,26 +530,26 @@
goto fail_master;
/* Read in the master inode number inode */
- error = gfs2_lookup_simple(sdp->sd_master_dir, "inum",
- &sdp->sd_inum_inode);
- if (error) {
+ sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum");
+ if (IS_ERR(sdp->sd_inum_inode)) {
+ error = PTR_ERR(sdp->sd_inum_inode);
fs_err(sdp, "can't read in inum inode: %d\n", error);
goto fail_journal;
}
/* Read in the master statfs inode */
- error = gfs2_lookup_simple(sdp->sd_master_dir, "statfs",
- &sdp->sd_statfs_inode);
- if (error) {
+ sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs");
+ if (IS_ERR(sdp->sd_statfs_inode)) {
+ error = PTR_ERR(sdp->sd_statfs_inode);
fs_err(sdp, "can't read in statfs inode: %d\n", error);
goto fail_inum;
}
/* Read in the resource index inode */
- error = gfs2_lookup_simple(sdp->sd_master_dir, "rindex",
- &sdp->sd_rindex);
- if (error) {
+ sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex");
+ if (IS_ERR(sdp->sd_rindex)) {
+ error = PTR_ERR(sdp->sd_rindex);
fs_err(sdp, "can't get resource index inode: %d\n", error);
goto fail_statfs;
}
@@ -559,9 +558,9 @@
sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1;
/* Read in the quota inode */
- error = gfs2_lookup_simple(sdp->sd_master_dir, "quota",
- &sdp->sd_quota_inode);
- if (error) {
+ sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota");
+ if (IS_ERR(sdp->sd_quota_inode)) {
+ error = PTR_ERR(sdp->sd_quota_inode);
fs_err(sdp, "can't get quota file inode: %d\n", error);
goto fail_rindex;
}
@@ -600,36 +599,41 @@
if (undo)
goto fail_qc_gh;
- error = gfs2_lookup_simple(sdp->sd_master_dir, "per_node", &pn);
- if (error) {
+ pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node");
+ if (IS_ERR(pn)) {
+ error = PTR_ERR(pn);
fs_err(sdp, "can't find per_node directory: %d\n", error);
return error;
}
sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid);
- error = gfs2_lookup_simple(pn, buf, &sdp->sd_ir_inode);
- if (error) {
+ sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf);
+ if (IS_ERR(sdp->sd_ir_inode)) {
+ error = PTR_ERR(sdp->sd_ir_inode);
fs_err(sdp, "can't find local \"ir\" file: %d\n", error);
goto fail;
}
sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid);
- error = gfs2_lookup_simple(pn, buf, &sdp->sd_sc_inode);
- if (error) {
+ sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf);
+ if (IS_ERR(sdp->sd_sc_inode)) {
+ error = PTR_ERR(sdp->sd_sc_inode);
fs_err(sdp, "can't find local \"sc\" file: %d\n", error);
goto fail_ir_i;
}
sprintf(buf, "unlinked_tag%u", sdp->sd_jdesc->jd_jid);
- error = gfs2_lookup_simple(pn, buf, &sdp->sd_ut_inode);
- if (error) {
+ sdp->sd_ut_inode = gfs2_lookup_simple(pn, buf);
+ if (IS_ERR(sdp->sd_ut_inode)) {
+ error = PTR_ERR(sdp->sd_ut_inode);
fs_err(sdp, "can't find local \"ut\" file: %d\n", error);
goto fail_sc_i;
}
sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid);
- error = gfs2_lookup_simple(pn, buf, &sdp->sd_qc_inode);
- if (error) {
+ sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf);
+ if (IS_ERR(sdp->sd_qc_inode)) {
+ error = PTR_ERR(sdp->sd_qc_inode);
fs_err(sdp, "can't find local \"qc\" file: %d\n", error);
goto fail_ut_i;
}