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| author |   Jan Kara <jack@suse.cz> | 2010-10-20 22:17:28 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2011-01-06 17:03:55 +0100 |
| commit | c03cad241af63445b751781a09faf08b3a5b77c1 (patch) | |
| tree | 2e6f329259d442c23829c218a21977bbd6a5d248 /fs/udf/udf_sb.h | |
| parent | udf: Protect all modifications of LVID with s_alloc_mutex (diff) | |
| download | linux-dev-c03cad241af63445b751781a09faf08b3a5b77c1.tar.xz linux-dev-c03cad241af63445b751781a09faf08b3a5b77c1.zip | |
udf: Protect default inode credentials by rwlock
Superblock carries credentials (uid, gid, etc.) which are used as default
values in __udf_read_inode() when media does not provide these. These
credentials can change during remount so we protect them by a rwlock so that
each inode gets a consistent set of credentials.
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/udf/udf_sb.h')
| -rw-r--r-- | fs/udf/udf_sb.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h index 9f38a6ca4fd5..4858c191242b 100644 --- a/fs/udf/udf_sb.h +++ b/fs/udf/udf_sb.h @@ -129,6 +129,8 @@ struct udf_sb_info { uid_t s_uid; mode_t s_fmode; mode_t s_dmode; + /* Lock protecting consistency of above permission settings */ + rwlock_t s_cred_lock; /* Root Info */ struct timespec s_record_time; |