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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-03 14:37:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-03 14:37:02 -0700
commitc939f9f9d225972a60181c95df8a9aa50f8b1701 (patch)
tree06f7621294bab5862ca15fa8c3749edcfc1ead3c /fs
parentb8b3e9058f0f1d5c5a81c7d3d46f373d5f59a82c (diff)
parentc18de72fb3c72fdc5ca883910761af3f14d90d76 (diff)
downloadvexpress-lsk-c939f9f9d225972a60181c95df8a9aa50f8b1701.tar.gz
Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: fix a memory leak on error path. UBIFS: fix GC LEB recovery UBIFS: use ERR_CAST UBIFS: check return code
Diffstat (limited to 'fs')
-rw-r--r--fs/ubifs/lpt.c14
-rw-r--r--fs/ubifs/lpt_commit.c2
-rw-r--r--fs/ubifs/recovery.c23
-rw-r--r--fs/ubifs/super.c4
4 files changed, 29 insertions, 14 deletions
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index ad7f67b827e..0084a33c4c6 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -1457,13 +1457,13 @@ struct ubifs_lprops *ubifs_lpt_lookup(struct ubifs_info *c, int lnum)
shft -= UBIFS_LPT_FANOUT_SHIFT;
nnode = ubifs_get_nnode(c, nnode, iip);
if (IS_ERR(nnode))
- return ERR_PTR(PTR_ERR(nnode));
+ return ERR_CAST(nnode);
}
iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
shft -= UBIFS_LPT_FANOUT_SHIFT;
pnode = ubifs_get_pnode(c, nnode, iip);
if (IS_ERR(pnode))
- return ERR_PTR(PTR_ERR(pnode));
+ return ERR_CAST(pnode);
iip = (i & (UBIFS_LPT_FANOUT - 1));
dbg_lp("LEB %d, free %d, dirty %d, flags %d", lnum,
pnode->lprops[iip].free, pnode->lprops[iip].dirty,
@@ -1586,7 +1586,7 @@ struct ubifs_lprops *ubifs_lpt_lookup_dirty(struct ubifs_info *c, int lnum)
nnode = c->nroot;
nnode = dirty_cow_nnode(c, nnode);
if (IS_ERR(nnode))
- return ERR_PTR(PTR_ERR(nnode));
+ return ERR_CAST(nnode);
i = lnum - c->main_first;
shft = c->lpt_hght * UBIFS_LPT_FANOUT_SHIFT;
for (h = 1; h < c->lpt_hght; h++) {
@@ -1594,19 +1594,19 @@ struct ubifs_lprops *ubifs_lpt_lookup_dirty(struct ubifs_info *c, int lnum)
shft -= UBIFS_LPT_FANOUT_SHIFT;
nnode = ubifs_get_nnode(c, nnode, iip);
if (IS_ERR(nnode))
- return ERR_PTR(PTR_ERR(nnode));
+ return ERR_CAST(nnode);
nnode = dirty_cow_nnode(c, nnode);
if (IS_ERR(nnode))
- return ERR_PTR(PTR_ERR(nnode));
+ return ERR_CAST(nnode);
}
iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
shft -= UBIFS_LPT_FANOUT_SHIFT;
pnode = ubifs_get_pnode(c, nnode, iip);
if (IS_ERR(pnode))
- return ERR_PTR(PTR_ERR(pnode));
+ return ERR_CAST(pnode);
pnode = dirty_cow_pnode(c, pnode);
if (IS_ERR(pnode))
- return ERR_PTR(PTR_ERR(pnode));
+ return ERR_CAST(pnode);
iip = (i & (UBIFS_LPT_FANOUT - 1));
dbg_lp("LEB %d, free %d, dirty %d, flags %d", lnum,
pnode->lprops[iip].free, pnode->lprops[iip].dirty,
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index 13cb7a4237b..d12535b7fc7 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -646,7 +646,7 @@ static struct ubifs_pnode *pnode_lookup(struct ubifs_info *c, int i)
shft -= UBIFS_LPT_FANOUT_SHIFT;
nnode = ubifs_get_nnode(c, nnode, iip);
if (IS_ERR(nnode))
- return ERR_PTR(PTR_ERR(nnode));
+ return ERR_CAST(nnode);
}
iip = ((i >> shft) & (UBIFS_LPT_FANOUT - 1));
return ubifs_get_pnode(c, nnode, iip);
diff --git a/fs/ubifs/recovery.c b/fs/ubifs/recovery.c
index 109c6ea03bb..daae9e1f538 100644
--- a/fs/ubifs/recovery.c
+++ b/fs/ubifs/recovery.c
@@ -24,7 +24,7 @@
* This file implements functions needed to recover from unclean un-mounts.
* When UBIFS is mounted, it checks a flag on the master node to determine if
* an un-mount was completed successfully. If not, the process of mounting
- * incorparates additional checking and fixing of on-flash data structures.
+ * incorporates additional checking and fixing of on-flash data structures.
* UBIFS always cleans away all remnants of an unclean un-mount, so that
* errors do not accumulate. However UBIFS defers recovery if it is mounted
* read-only, and the flash is not modified in that case.
@@ -1063,8 +1063,21 @@ int ubifs_rcvry_gc_commit(struct ubifs_info *c)
}
err = ubifs_find_dirty_leb(c, &lp, wbuf->offs, 2);
if (err) {
- if (err == -ENOSPC)
- dbg_err("could not find a dirty LEB");
+ /*
+ * There are no dirty or empty LEBs subject to here being
+ * enough for the index. Try to use
+ * 'ubifs_find_free_leb_for_idx()', which will return any empty
+ * LEBs (ignoring index requirements). If the index then
+ * doesn't have enough LEBs the recovery commit will fail -
+ * which is the same result anyway i.e. recovery fails. So
+ * there is no problem ignoring index requirements and just
+ * grabbing a free LEB since we have already established there
+ * is not a dirty LEB we could have used instead.
+ */
+ if (err == -ENOSPC) {
+ dbg_rcvry("could not find a dirty LEB");
+ goto find_free;
+ }
return err;
}
ubifs_assert(!(lp.flags & LPROPS_INDEX));
@@ -1139,8 +1152,8 @@ int ubifs_rcvry_gc_commit(struct ubifs_info *c)
find_free:
/*
* There is no GC head LEB or the free space in the GC head LEB is too
- * small. Allocate gc_lnum by calling 'ubifs_find_free_leb_for_idx()' so
- * GC is not run.
+ * small, or there are not dirty LEBs. Allocate gc_lnum by calling
+ * 'ubifs_find_free_leb_for_idx()' so GC is not run.
*/
lnum = ubifs_find_free_leb_for_idx(c);
if (lnum < 0) {
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 4d2f2157dd3..5fc5a098897 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1307,6 +1307,8 @@ static int mount_ubifs(struct ubifs_info *c)
if (err)
goto out_orphans;
err = ubifs_rcvry_gc_commit(c);
+ if (err)
+ goto out_orphans;
} else {
err = take_gc_lnum(c);
if (err)
@@ -1318,7 +1320,7 @@ static int mount_ubifs(struct ubifs_info *c)
*/
err = ubifs_leb_unmap(c, c->gc_lnum);
if (err)
- return err;
+ goto out_orphans;
}
err = dbg_check_lprops(c);