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fs/9p: Add support for marking inode attribute invalid

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With cached mode some of the file system operation result
in updating inode attributes (ctime). Add support for
marking inode attribute invalid in such cases so that
we fetch the updated inode attribute on dentry revalidation.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
This commit is contained in:
Aneesh Kumar K.V
2011-02-28 17:04:06 +05:30
committed by Eric Van Hensbergen
parent 0e432703aa
commit b3cbea03b4
5 changed files with 104 additions and 0 deletions
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4
fs/9p/v9fs.h
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@@ -116,12 +116,16 @@ struct v9fs_session_info {
struct p9_fid *root_fid; /* Used for file system sync */
};
/* cache_validity flags */
#define V9FS_INO_INVALID_ATTR 0x01
struct v9fs_inode {
#ifdef CONFIG_9P_FSCACHE
spinlock_t fscache_lock;
struct fscache_cookie *fscache;
struct p9_qid *fscache_key;
#endif
unsigned int cache_validity;
struct p9_fid *writeback_fid;
struct inode vfs_inode;
};