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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-17 09:46:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-17 09:46:33 -0700
commitb7c142dbf1e7422d0be7f7faa3f1163ad9da9788 (patch)
tree6e62c8654bb9c329f89246235062ac2a289960df /fs/ubifs/super.c
parent0bd8df908de2aefe312d05bd25cd3abc21a6d1da (diff)
parentf2c5dbd7b7396457efc114f825acfdd4db4608f8 (diff)
Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: start using hrtimers hrtimer: export ktime_add_safe UBIFS: do not forget to register BDI device UBIFS: allow sync option in rootflags UBIFS: remove dead code UBIFS: use anonymous device UBIFS: return proper error code if the compr is not present UBIFS: return error if link and unlink race UBIFS: reset no_space flag after inode deletion
Diffstat (limited to 'fs/ubifs/super.c')
-rw-r--r--fs/ubifs/super.c73
1 files changed, 48 insertions, 25 deletions
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 3260b73abe2..79fad43f3c5 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -361,6 +361,11 @@ static void ubifs_delete_inode(struct inode *inode)
out:
if (ui->dirty)
ubifs_release_dirty_inode_budget(c, ui);
+ else {
+ /* We've deleted something - clean the "no space" flags */
+ c->nospace = c->nospace_rp = 0;
+ smp_wmb();
+ }
clear_inode(inode);
}
@@ -792,7 +797,7 @@ static int alloc_wbufs(struct ubifs_info *c)
* does not need to be synchronized by timer.
*/
c->jheads[GCHD].wbuf.dtype = UBI_LONGTERM;
- c->jheads[GCHD].wbuf.timeout = 0;
+ c->jheads[GCHD].wbuf.softlimit = ktime_set(0, 0);
return 0;
}
@@ -933,6 +938,27 @@ static const match_table_t tokens = {
};
/**
+ * parse_standard_option - parse a standard mount option.
+ * @option: the option to parse
+ *
+ * Normally, standard mount options like "sync" are passed to file-systems as
+ * flags. However, when a "rootflags=" kernel boot parameter is used, they may
+ * be present in the options string. This function tries to deal with this
+ * situation and parse standard options. Returns 0 if the option was not
+ * recognized, and the corresponding integer flag if it was.
+ *
+ * UBIFS is only interested in the "sync" option, so do not check for anything
+ * else.
+ */
+static int parse_standard_option(const char *option)
+{
+ ubifs_msg("parse %s", option);
+ if (!strcmp(option, "sync"))
+ return MS_SYNCHRONOUS;
+ return 0;
+}
+
+/**
* ubifs_parse_options - parse mount parameters.
* @c: UBIFS file-system description object
* @options: parameters to parse
@@ -1008,9 +1034,19 @@ static int ubifs_parse_options(struct ubifs_info *c, char *options,
break;
}
default:
- ubifs_err("unrecognized mount option \"%s\" "
- "or missing value", p);
- return -EINVAL;
+ {
+ unsigned long flag;
+ struct super_block *sb = c->vfs_sb;
+
+ flag = parse_standard_option(p);
+ if (!flag) {
+ ubifs_err("unrecognized mount option \"%s\" "
+ "or missing value", p);
+ return -EINVAL;
+ }
+ sb->s_flags |= flag;
+ break;
+ }
}
}
@@ -1180,6 +1216,7 @@ static int mount_ubifs(struct ubifs_info *c)
if (!ubifs_compr_present(c->default_compr)) {
ubifs_err("'compressor \"%s\" is not compiled in",
ubifs_compr_name(c->default_compr));
+ err = -ENOTSUPP;
goto out_free;
}
@@ -1656,7 +1693,7 @@ static void ubifs_remount_ro(struct ubifs_info *c)
for (i = 0; i < c->jhead_cnt; i++) {
ubifs_wbuf_sync(&c->jheads[i].wbuf);
- del_timer_sync(&c->jheads[i].wbuf.timer);
+ hrtimer_cancel(&c->jheads[i].wbuf.timer);
}
c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY);
@@ -1719,7 +1756,7 @@ static void ubifs_put_super(struct super_block *sb)
if (c->jheads)
for (i = 0; i < c->jhead_cnt; i++) {
ubifs_wbuf_sync(&c->jheads[i].wbuf);
- del_timer_sync(&c->jheads[i].wbuf.timer);
+ hrtimer_cancel(&c->jheads[i].wbuf.timer);
}
/*
@@ -1911,6 +1948,7 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
INIT_LIST_HEAD(&c->orph_list);
INIT_LIST_HEAD(&c->orph_new);
+ c->vfs_sb = sb;
c->highest_inum = UBIFS_FIRST_INO;
c->lhead_lnum = c->ltail_lnum = UBIFS_LOG_LNUM;
@@ -1945,13 +1983,10 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
if (err)
goto out_bdi;
- c->vfs_sb = sb;
-
sb->s_fs_info = c;
sb->s_magic = UBIFS_SUPER_MAGIC;
sb->s_blocksize = UBIFS_BLOCK_SIZE;
sb->s_blocksize_bits = UBIFS_BLOCK_SHIFT;
- sb->s_dev = c->vi.cdev;
sb->s_maxbytes = c->max_inode_sz = key_max_inode_size(c);
if (c->max_inode_sz > MAX_LFS_FILESIZE)
sb->s_maxbytes = c->max_inode_sz = MAX_LFS_FILESIZE;
@@ -1996,16 +2031,9 @@ out_free:
static int sb_test(struct super_block *sb, void *data)
{
dev_t *dev = data;
+ struct ubifs_info *c = sb->s_fs_info;
- return sb->s_dev == *dev;
-}
-
-static int sb_set(struct super_block *sb, void *data)
-{
- dev_t *dev = data;
-
- sb->s_dev = *dev;
- return 0;
+ return c->vi.cdev == *dev;
}
static int ubifs_get_sb(struct file_system_type *fs_type, int flags,
@@ -2033,7 +2061,7 @@ static int ubifs_get_sb(struct file_system_type *fs_type, int flags,
dbg_gen("opened ubi%d_%d", vi.ubi_num, vi.vol_id);
- sb = sget(fs_type, &sb_test, &sb_set, &vi.cdev);
+ sb = sget(fs_type, &sb_test, &set_anon_super, &vi.cdev);
if (IS_ERR(sb)) {
err = PTR_ERR(sb);
goto out_close;
@@ -2073,16 +2101,11 @@ out_close:
return err;
}
-static void ubifs_kill_sb(struct super_block *sb)
-{
- generic_shutdown_super(sb);
-}
-
static struct file_system_type ubifs_fs_type = {
.name = "ubifs",
.owner = THIS_MODULE,
.get_sb = ubifs_get_sb,
- .kill_sb = ubifs_kill_sb
+ .kill_sb = kill_anon_super,
};
/*