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| author | Tyler Hicks <tyhicks@linux.vnet.ibm.com> | 2011-05-24 03:49:02 -0500 |
|---|---|---|
| committer | Tyler Hicks <tyhicks@linux.vnet.ibm.com> | 2011-05-29 14:23:39 -0500 |
| commit | 3b06b3ebf44170c90c893c6c80916db6e922b9f2 (patch) | |
| tree | 1da70b311ad7ec7615f3d44ae269ca56a458fc2d /fs/ecryptfs/main.c | |
| parent | 5ccf92037c7c6e6f28175fd245284923f939259f (diff) | |
| download | linux-3b06b3ebf44170c90c893c6c80916db6e922b9f2.tar.gz linux-3b06b3ebf44170c90c893c6c80916db6e922b9f2.tar.bz2 linux-3b06b3ebf44170c90c893c6c80916db6e922b9f2.zip | |
eCryptfs: Fix new inode race condition
Only unlock and d_add() new inodes after the plaintext inode size has
been read from the lower filesystem. This fixes a race condition that
was sometimes seen during a multi-job kernel build in an eCryptfs mount.
https://bugzilla.kernel.org/show_bug.cgi?id=36002
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Reported-by: David <david@unsolicited.net>
Tested-by: David <david@unsolicited.net>
Diffstat (limited to 'fs/ecryptfs/main.c')
| -rw-r--r-- | fs/ecryptfs/main.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c index 7c697abab396..943a4f55ed6d 100644 --- a/fs/ecryptfs/main.c +++ b/fs/ecryptfs/main.c @@ -135,12 +135,12 @@ static int ecryptfs_init_lower_file(struct dentry *dentry, return rc; } -int ecryptfs_get_lower_file(struct dentry *dentry) +int ecryptfs_get_lower_file(struct dentry *dentry, struct inode *inode) { - struct ecryptfs_inode_info *inode_info = - ecryptfs_inode_to_private(dentry->d_inode); + struct ecryptfs_inode_info *inode_info; int count, rc = 0; + inode_info = ecryptfs_inode_to_private(inode); mutex_lock(&inode_info->lower_file_mutex); count = atomic_inc_return(&inode_info->lower_file_count); if (WARN_ON_ONCE(count < 1)) |