lkml.org 
[lkml]   [2007]   [Apr]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 10/16] AFS: Handle multiple mounts of an AFS superblock correctly [try #3]
Date
Handle multiple mounts of an AFS superblock correctly, checking to see whether
the superblock is already initialised after calling sget() rather than just
unconditionally stamping all over it.

Also delete the "silent" parameter to afs_fill_super() as it's not used and
can, in any case, be obtained from sb->s_flags.

Signed-Off-By: David Howells <dhowells@redhat.com>
---

fs/afs/super.c | 26 ++++++++++++++++----------
1 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/fs/afs/super.c b/fs/afs/super.c
index efc4fe6..77e6875 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -212,7 +212,7 @@ static int afs_test_super(struct super_block *sb, void *data)
/*
* fill in the superblock
*/
-static int afs_fill_super(struct super_block *sb, void *data, int silent)
+static int afs_fill_super(struct super_block *sb, void *data)
{
struct afs_mount_params *params = data;
struct afs_super_info *as = NULL;
@@ -319,17 +319,23 @@ static int afs_get_sb(struct file_system_type *fs_type,
goto error;
}

- sb->s_flags = flags;
-
- ret = afs_fill_super(sb, &params, flags & MS_SILENT ? 1 : 0);
- if (ret < 0) {
- up_write(&sb->s_umount);
- deactivate_super(sb);
- goto error;
+ if (!sb->s_root) {
+ /* initial superblock/root creation */
+ _debug("create");
+ sb->s_flags = flags;
+ ret = afs_fill_super(sb, &params);
+ if (ret < 0) {
+ up_write(&sb->s_umount);
+ deactivate_super(sb);
+ goto error;
+ }
+ sb->s_flags |= MS_ACTIVE;
+ } else {
+ _debug("reuse");
+ ASSERTCMP(sb->s_flags, &, MS_ACTIVE);
}
- sb->s_flags |= MS_ACTIVE;
- simple_set_mnt(mnt, sb);

+ simple_set_mnt(mnt, sb);
afs_put_volume(params.volume);
afs_put_cell(params.default_cell);
_leave(" = 0 [%p]", sb);
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-04-25 13:01    [W:0.055 / U:1.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site