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locks: convert lease handling to file_lock_context

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Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Acked-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Jeff Layton
2015-01-16 15:05:55 -05:00
committed by Jeff Layton
parent bd61e0a9c8
commit 8634b51f6c
2 changed files with 104 additions and 157 deletions
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5
include/linux/fs.h
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@@ -969,6 +969,7 @@ struct file_lock {
struct file_lock_context {
struct list_head flc_flock;
struct list_head flc_posix;
struct list_head flc_lease;
};
/* The following constant reflects the upper bound of the file/locking space */
@@ -1990,7 +1991,7 @@ static inline int break_lease(struct inode *inode, unsigned int mode)
* end up racing with tasks trying to set a new lease on this file.
*/
smp_mb();
if (inode->i_flock)
if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
return __break_lease(inode, mode, FL_LEASE);
return 0;
}
@@ -2003,7 +2004,7 @@ static inline int break_deleg(struct inode *inode, unsigned int mode)
* end up racing with tasks trying to set a new lease on this file.
*/
smp_mb();
if (inode->i_flock)
if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
return __break_lease(inode, mode, FL_DELEG);
return 0;
}