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| author | Lukas Czerner <lczerner@redhat.com> | 2011-02-03 14:33:33 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-02-03 14:33:33 -0500 |
| commit | 8f021222c1e2756ea4c9dde93b23e1d2a0a4ec37 (patch) | |
| tree | 8a74b91a0b1dd27fad9c384449bac0c4b8777a74 /fs | |
| parent | 8f1f745331c1b560f53c0d60e55a4f4f43f7cce5 (diff) | |
| download | linux-8f021222c1e2756ea4c9dde93b23e1d2a0a4ec37.tar.gz | |
ext4: unregister features interface on module unload
Ext4 features interface was not properly unregistered which led to problems while unloading/reloading ext4 module. This commit fixes that by adding proper kobject unregistration code into ext4_exit_fs() as well as fail-path of ext4_init_fs() Reported-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/super.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 3d8cf2cab379..4898cb1ff606 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -4769,7 +4769,7 @@ static struct file_system_type ext4_fs_type = { .fs_flags = FS_REQUIRES_DEV, }; -int __init ext4_init_feat_adverts(void) +static int __init ext4_init_feat_adverts(void) { struct ext4_features *ef; int ret = -ENOMEM; @@ -4793,6 +4793,13 @@ out: return ret; } +static void ext4_exit_feat_adverts(void) +{ + kobject_put(&ext4_feat->f_kobj); + wait_for_completion(&ext4_feat->f_kobj_unregister); + kfree(ext4_feat); +} + static int __init ext4_init_fs(void) { int err; @@ -4839,7 +4846,7 @@ out1: out2: ext4_exit_mballoc(); out3: - kfree(ext4_feat); + ext4_exit_feat_adverts(); remove_proc_entry("fs/ext4", NULL); kset_unregister(ext4_kset); out4: @@ -4858,6 +4865,7 @@ static void __exit ext4_exit_fs(void) destroy_inodecache(); ext4_exit_xattr(); ext4_exit_mballoc(); + ext4_exit_feat_adverts(); remove_proc_entry("fs/ext4", NULL); kset_unregister(ext4_kset); ext4_exit_system_zone(); |