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authorZhu Yanhai <zhu.yanhai@gmail.com>2011-04-04 12:58:12 -0400
committerTheodore Ts'o <tytso@mit.edu>2011-04-04 12:58:12 -0400
commit50f689af019b19f9b9a39be782c21b6f52b1615a (patch)
tree40b80bb3acc51ebfba7199c0fadff25da2ee6d51 /fs
parent0ce790e7d736cedc563e1fb4e998babf5a4dbc3d (diff)
downloadop-kernel-dev-50f689af019b19f9b9a39be782c21b6f52b1615a.zip
op-kernel-dev-50f689af019b19f9b9a39be782c21b6f52b1615a.tar.gz
jbd2: move bdget out of critical section
bdget() should not be called when we hold spinlocks since it might sleep. Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Zhu Yanhai <gaoyang.zyh@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs')
-rw-r--r--fs/jbd2/journal.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 90407b8..33dd3ef 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -2413,10 +2413,12 @@ const char *jbd2_dev_to_name(dev_t device)
new_dev = kmalloc(sizeof(struct devname_cache), GFP_KERNEL);
if (!new_dev)
return "NODEV-ALLOCFAILURE"; /* Something non-NULL */
+ bd = bdget(device);
spin_lock(&devname_cache_lock);
if (devcache[i]) {
if (devcache[i]->device == device) {
kfree(new_dev);
+ bdput(bd);
ret = devcache[i]->devname;
spin_unlock(&devname_cache_lock);
return ret;
@@ -2425,7 +2427,6 @@ const char *jbd2_dev_to_name(dev_t device)
}
devcache[i] = new_dev;
devcache[i]->device = device;
- bd = bdget(device);
if (bd) {
bdevname(bd, devcache[i]->devname);
bdput(bd);
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