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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-10 00:35:53 +0400 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-10 00:35:53 +0400 |
commit | 263a5c8e16c34199ddf6de3f102e789ffa3ee26e (patch) | |
tree | 4f049e339d522b2ab0ba3bed3ec217e4bbc83d35 /fs/super.c | |
parent | 54d20f006ceff1f2f1e69d0e54049b6c0765c039 (diff) | |
parent | 192cfd58774b4d17b2fe8bdc77d89c2ef4e0591d (diff) | |
download | linux-263a5c8e16c34199ddf6de3f102e789ffa3ee26e.tar.xz |
Merge 3.3-rc6 into driver-core-next
This was done to resolve a conflict in the drivers/base/cpu.c file.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/super.c')
-rw-r--r-- | fs/super.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/super.c b/fs/super.c index 6015c02296b7..6277ec6cb60a 100644 --- a/fs/super.c +++ b/fs/super.c @@ -634,6 +634,28 @@ rescan: EXPORT_SYMBOL(get_super); /** + * get_super_thawed - get thawed superblock of a device + * @bdev: device to get the superblock for + * + * Scans the superblock list and finds the superblock of the file system + * mounted on the device. The superblock is returned once it is thawed + * (or immediately if it was not frozen). %NULL is returned if no match + * is found. + */ +struct super_block *get_super_thawed(struct block_device *bdev) +{ + while (1) { + struct super_block *s = get_super(bdev); + if (!s || s->s_frozen == SB_UNFROZEN) + return s; + up_read(&s->s_umount); + vfs_check_frozen(s, SB_FREEZE_WRITE); + put_super(s); + } +} +EXPORT_SYMBOL(get_super_thawed); + +/** * get_active_super - get an active reference to the superblock of a device * @bdev: device to get the superblock for * |