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| author | Dmitry Monakhov <dmonakhov@openvz.org> | 2009-12-14 15:21:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-01-06 14:26:51 -0800 |
| commit | 36f1fbe83ea3e2b64d4429439d05ad2dc25b3ca8 (patch) | |
| tree | f030931f8e89a4da06283570a60cb90e8c7fc52b | |
| parent | 0bce92b05a81bb290ae58f689b14a283a87db6d7 (diff) | |
| download | lwn-36f1fbe83ea3e2b64d4429439d05ad2dc25b3ca8.tar.gz lwn-36f1fbe83ea3e2b64d4429439d05ad2dc25b3ca8.zip | |
Add unlocked version of inode_add_bytes() function
commit b462707e7ccad058ae151e5c5b06eb5cadcb737f upstream.
Quota code requires unlocked version of this function. Off course
we can just copy-paste the code, but copy-pasting is always an evil.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/stat.c | 10 | ||||
| -rw-r--r-- | include/linux/fs.h | 1 |
2 files changed, 9 insertions, 2 deletions
diff --git a/fs/stat.c b/fs/stat.c index 075694e31d8b..c4ecd52c5737 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -401,9 +401,9 @@ SYSCALL_DEFINE4(fstatat64, int, dfd, char __user *, filename, } #endif /* __ARCH_WANT_STAT64 */ -void inode_add_bytes(struct inode *inode, loff_t bytes) +/* Caller is here responsible for sufficient locking (ie. inode->i_lock) */ +void __inode_add_bytes(struct inode *inode, loff_t bytes) { - spin_lock(&inode->i_lock); inode->i_blocks += bytes >> 9; bytes &= 511; inode->i_bytes += bytes; @@ -411,6 +411,12 @@ void inode_add_bytes(struct inode *inode, loff_t bytes) inode->i_blocks++; inode->i_bytes -= 512; } +} + +void inode_add_bytes(struct inode *inode, loff_t bytes) +{ + spin_lock(&inode->i_lock); + __inode_add_bytes(inode, bytes); spin_unlock(&inode->i_lock); } diff --git a/include/linux/fs.h b/include/linux/fs.h index 73e9b643e455..e2eeaa5cfe94 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2296,6 +2296,7 @@ extern const struct inode_operations page_symlink_inode_operations; extern int generic_readlink(struct dentry *, char __user *, int); extern void generic_fillattr(struct inode *, struct kstat *); extern int vfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); +void __inode_add_bytes(struct inode *inode, loff_t bytes); void inode_add_bytes(struct inode *inode, loff_t bytes); void inode_sub_bytes(struct inode *inode, loff_t bytes); loff_t inode_get_bytes(struct inode *inode); |