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Defer close only when lease is enabled.

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When smb2 lease parameter is disabled on server. Server grants
batch oplock instead of RHW lease by default on open, inode page cache
needs to be zapped immediatley upon close as cache is not valid.

Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Rohith Surabattula 2021-05-17 11:28:34 +00:00 committed by Steve French
parent 860b69a9d7
commit 0ab95c2510
3 changed files with 4 additions and 0 deletions
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1
fs/cifs/cifsglob.h
View File

@ -1417,6 +1417,7 @@ struct cifsInodeInfo {
struct inode vfs_inode;
struct list_head deferred_closes; /* list of deferred closes */
spinlock_t deferred_lock; /* protection on deferred list */
bool lease_granted; /* Flag to indicate whether lease or oplock is granted. */
};
static inline struct cifsInodeInfo *

1
fs/cifs/file.c
View File

@ -896,6 +896,7 @@ int cifs_close(struct inode *inode, struct file *file)
file->private_data = NULL;
dclose = kmalloc(sizeof(struct cifs_deferred_close), GFP_KERNEL);
if ((cinode->oplock == CIFS_CACHE_RHW_FLG) &&
cinode->lease_granted &&
dclose) {
if (test_bit(CIFS_INO_MODIFIED_ATTR, &cinode->flags))
inode->i_ctime = inode->i_mtime = current_time(inode);

2
fs/cifs/smb2ops.c
View File

@ -3983,6 +3983,7 @@ smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
unsigned int epoch, bool *purge_cache)
{
oplock &= 0xFF;
cinode->lease_granted = false;
if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
return;
if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
@ -4009,6 +4010,7 @@ smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
unsigned int new_oplock = 0;
oplock &= 0xFF;
cinode->lease_granted = true;
if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
return;