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| author | NeilBrown <neilb@suse.de> | 2008-02-06 01:39:55 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-06 10:41:18 -0800 |
| commit | ca38805945edf5d1f5444b283eed95bb954772e8 (patch) | |
| tree | 9e31b58f8124c0ef5d6803c693c00f5b8f71dd24 /drivers/md/md.c | |
| parent | c5d79adba7ced41d7ac097c2ab74759d10522dd5 (diff) | |
| download | kernel-crypto-ca38805945edf5d1f5444b283eed95bb954772e8.tar.gz kernel-crypto-ca38805945edf5d1f5444b283eed95bb954772e8.tar.xz kernel-crypto-ca38805945edf5d1f5444b283eed95bb954772e8.zip | |
md: lock address when changing attributes of component devices
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 7c9a87b02e7..39757566f39 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2075,12 +2075,18 @@ rdev_attr_store(struct kobject *kobj, struct attribute *attr, { struct rdev_sysfs_entry *entry = container_of(attr, struct rdev_sysfs_entry, attr); mdk_rdev_t *rdev = container_of(kobj, mdk_rdev_t, kobj); + int rv; if (!entry->store) return -EIO; if (!capable(CAP_SYS_ADMIN)) return -EACCES; - return entry->store(rdev, page, length); + rv = mddev_lock(rdev->mddev); + if (!rv) { + rv = entry->store(rdev, page, length); + mddev_unlock(rdev->mddev); + } + return rv; } static void rdev_free(struct kobject *ko) |