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Diffstat (limited to 'fs/reiserfs')
-rw-r--r--fs/reiserfs/bitmap.c3
-rw-r--r--fs/reiserfs/super.c43
2 files changed, 24 insertions, 22 deletions
diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c
index a945cd265228..70de42f09f1d 100644
--- a/fs/reiserfs/bitmap.c
+++ b/fs/reiserfs/bitmap.c
@@ -1364,10 +1364,7 @@ int reiserfs_init_bitmap_cache(struct super_block *sb)
struct reiserfs_bitmap_info *bitmap;
unsigned int bmap_nr = reiserfs_bmap_count(sb);
- /* Avoid lock recursion in fault case */
- reiserfs_write_unlock(sb);
bitmap = vmalloc(sizeof(*bitmap) * bmap_nr);
- reiserfs_write_lock(sb);
if (bitmap == NULL)
return -ENOMEM;
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 1d42e707d5fa..620dd5d9e1b1 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1746,22 +1746,11 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
mutex_init(&REISERFS_SB(s)->lock);
REISERFS_SB(s)->lock_depth = -1;
- /*
- * This function is called with the bkl, which also was the old
- * locking used here.
- * do_journal_begin() will soon check if we hold the lock (ie: was the
- * bkl). This is likely because do_journal_begin() has several another
- * callers because at this time, it doesn't seem to be necessary to
- * protect against anything.
- * Anyway, let's be conservative and lock for now.
- */
- reiserfs_write_lock(s);
-
jdev_name = NULL;
if (reiserfs_parse_options
(s, (char *)data, &(sbi->s_mount_opt), &blocks, &jdev_name,
&commit_max_age, qf_names, &qfmt) == 0) {
- goto error;
+ goto error_unlocked;
}
if (jdev_name && jdev_name[0]) {
REISERFS_SB(s)->s_jdev = kstrdup(jdev_name, GFP_KERNEL);
@@ -1777,7 +1766,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
if (blocks) {
SWARN(silent, s, "jmacd-7", "resize option for remount only");
- goto error;
+ goto error_unlocked;
}
/* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */
@@ -1787,7 +1776,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
else if (read_super_block(s, REISERFS_DISK_OFFSET_IN_BYTES)) {
SWARN(silent, s, "sh-2021", "can not find reiserfs on %s",
reiserfs_bdevname(s));
- goto error;
+ goto error_unlocked;
}
rs = SB_DISK_SUPER_BLOCK(s);
@@ -1803,7 +1792,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
"or increase size of your LVM partition");
SWARN(silent, s, "", "Or may be you forgot to "
"reboot after fdisk when it told you to");
- goto error;
+ goto error_unlocked;
}
sbi->s_mount_state = SB_REISERFS_STATE(s);
@@ -1811,8 +1800,9 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
if ((errval = reiserfs_init_bitmap_cache(s))) {
SWARN(silent, s, "jmacd-8", "unable to read bitmap");
- goto error;
+ goto error_unlocked;
}
+
errval = -EINVAL;
#ifdef CONFIG_REISERFS_CHECK
SWARN(silent, s, "", "CONFIG_REISERFS_CHECK is set ON");
@@ -1835,6 +1825,17 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
if (reiserfs_barrier_flush(s)) {
printk("reiserfs: using flush barriers\n");
}
+
+ /*
+ * This path assumed to be called with the BKL in the old times.
+ * Now we have inherited the big reiserfs lock from it and many
+ * reiserfs helpers called in the mount path and elsewhere require
+ * this lock to be held even if it's not always necessary. Let's be
+ * conservative and hold it early. The window can be reduced after
+ * careful review of the code.
+ */
+ reiserfs_write_lock(s);
+
// set_device_ro(s->s_dev, 1) ;
if (journal_init(s, jdev_name, old_format, commit_max_age)) {
SWARN(silent, s, "sh-2022",
@@ -1995,12 +1996,16 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
return (0);
error:
- if (jinit_done) { /* kill the commit thread, free journal ram */
+ reiserfs_write_unlock(s);
+
+error_unlocked:
+ /* kill the commit thread, free journal ram */
+ if (jinit_done) {
+ reiserfs_write_lock(s);
journal_release_error(NULL, s);
+ reiserfs_write_unlock(s);
}
- reiserfs_write_unlock(s);
-
reiserfs_free_bitmap_cache(s);
if (SB_BUFFER_WITH_SB(s))
brelse(SB_BUFFER_WITH_SB(s));