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Add unlocked version of inode_add_bytes() function

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commit b462707e7c 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>
This commit is contained in:
Dmitry Monakhov 2009-12-14 15:21:12 +03:00 committed by Greg Kroah-Hartman
parent 0aebc28083
commit f07c88dd6c
2 changed files with 9 additions and 2 deletions
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10
fs/stat.c
View File

@ -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);
}

1
include/linux/fs.h
View File

@ -2314,6 +2314,7 @@ 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);