GFS2: Support quota/noquota mount arguments

[cascardo/linux.git] / fs / gfs2 / glops.c

diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 8ebff8e..f34bc70 100644 (file)
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -12,7 +12,6 @@
 #include <linux/completion.h>
 #include <linux/buffer_head.h>
 #include <linux/gfs2_ondisk.h>
-#include <linux/lm_interface.h>
 #include <linux/bio.h>
 
 #include "gfs2.h"
@@ -38,20 +37,25 @@
 static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
 {
        struct gfs2_sbd *sdp = gl->gl_sbd;
-       unsigned int blocks;
        struct list_head *head = &gl->gl_ail_list;
        struct gfs2_bufdata *bd;
        struct buffer_head *bh;
-       int error;
+       struct gfs2_trans tr;
 
-       blocks = atomic_read(&gl->gl_ail_count);
-       if (!blocks)
-               return;
+       memset(&tr, 0, sizeof(tr));
+       tr.tr_revokes = atomic_read(&gl->gl_ail_count);
 
-       error = gfs2_trans_begin(sdp, 0, blocks);
-       if (gfs2_assert_withdraw(sdp, !error))
+       if (!tr.tr_revokes)
                return;
 
+       /* A shortened, inline version of gfs2_trans_begin() */
+       tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
+       tr.tr_ip = (unsigned long)__builtin_return_address(0);
+       INIT_LIST_HEAD(&tr.tr_list_buf);
+       gfs2_log_reserve(sdp, tr.tr_reserved);
+       BUG_ON(current->journal_info);
+       current->journal_info = &tr;
+
        gfs2_log_lock(sdp);
        while (!list_empty(head)) {
                bd = list_entry(head->next, struct gfs2_bufdata,
@@ -201,19 +205,12 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags)
  * Returns: 1 if it's ok
  */
 
-static int inode_go_demote_ok(struct gfs2_glock *gl)
+static int inode_go_demote_ok(const struct gfs2_glock *gl)
 {
        struct gfs2_sbd *sdp = gl->gl_sbd;
-       int demote = 0;
-
-       if (!gl->gl_object && !gl->gl_aspace->i_mapping->nrpages)
-               demote = 1;
-       else if (!sdp->sd_args.ar_localcaching &&
-                time_after_eq(jiffies, gl->gl_stamp +
-                              gfs2_tune_get(sdp, gt_demote_secs) * HZ))
-               demote = 1;
-
-       return demote;
+       if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
+               return 0;
+       return 1;
 }
 
 /**
@@ -284,7 +281,7 @@ static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
  * Returns: 1 if it's ok
  */
 
-static int rgrp_go_demote_ok(struct gfs2_glock *gl)
+static int rgrp_go_demote_ok(const struct gfs2_glock *gl)
 {
        return !gl->gl_aspace->i_mapping->nrpages;
 }
@@ -386,15 +383,15 @@ static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 }
 
 /**
- * quota_go_demote_ok - Check to see if it's ok to unlock a quota glock
+ * trans_go_demote_ok
  * @gl: the glock
  *
- * Returns: 1 if it's ok
+ * Always returns 0
  */
 
-static int quota_go_demote_ok(struct gfs2_glock *gl)
+static int trans_go_demote_ok(const struct gfs2_glock *gl)
 {
-       return !atomic_read(&gl->gl_lvb_count);
+       return 0;
 }
 
 const struct gfs2_glock_operations gfs2_meta_glops = {
@@ -426,6 +423,7 @@ const struct gfs2_glock_operations gfs2_rgrp_glops = {
 const struct gfs2_glock_operations gfs2_trans_glops = {
        .go_xmote_th = trans_go_sync,
        .go_xmote_bh = trans_go_xmote_bh,
+       .go_demote_ok = trans_go_demote_ok,
        .go_type = LM_TYPE_NONDISK,
 };
 
@@ -442,7 +440,6 @@ const struct gfs2_glock_operations gfs2_nondisk_glops = {
 };
 
 const struct gfs2_glock_operations gfs2_quota_glops = {
-       .go_demote_ok = quota_go_demote_ok,
        .go_type = LM_TYPE_QUOTA,
 };
 
@@ -450,3 +447,15 @@ const struct gfs2_glock_operations gfs2_journal_glops = {
        .go_type = LM_TYPE_JOURNAL,
 };
 
+const struct gfs2_glock_operations *gfs2_glops_list[] = {
+       [LM_TYPE_META] = &gfs2_meta_glops,
+       [LM_TYPE_INODE] = &gfs2_inode_glops,
+       [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
+       [LM_TYPE_NONDISK] = &gfs2_trans_glops,
+       [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
+       [LM_TYPE_FLOCK] = &gfs2_flock_glops,
+       [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
+       [LM_TYPE_QUOTA] = &gfs2_quota_glops,
+       [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
+};
+