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authorPavel Shilovsky <piastry@etersoft.ru>2011-05-26 10:01:59 +0400
committerSteve French <sfrench@us.ibm.com>2011-05-26 18:07:02 +0000
commitfa2989f4473413a86890066aa3a5676a53b541e4 (patch)
treea033c59307ba77ae0819e818aec7d68178d11d4d /fs/cifs/inode.c
parentc28c89fc43e3f81436efc4748837534d4d46f90c (diff)
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CIFS: Use pid saved from cifsFileInfo in writepages and set_file_size
We need it to make them work with mandatory locking style because we can fail in a situation like when kernel need to flush dirty pages and there is a lock held by a process who opened file. Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/inode.c')
-rw-r--r--fs/cifs/inode.c24
1 files changed, 18 insertions, 6 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index de02ed5e25c2..5e278d37912b 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1873,6 +1873,7 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct tcon_link *tlink = NULL;
struct cifsTconInfo *pTcon = NULL;
+ struct cifs_io_parms io_parms;
/*
* To avoid spurious oplock breaks from server, in the case of
@@ -1894,8 +1895,14 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
cFYI(1, "SetFSize for attrs rc = %d", rc);
if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
unsigned int bytes_written;
- rc = CIFSSMBWrite(xid, pTcon, nfid, 0, attrs->ia_size,
- &bytes_written, NULL, NULL, 1);
+
+ io_parms.netfid = nfid;
+ io_parms.pid = npid;
+ io_parms.tcon = pTcon;
+ io_parms.offset = 0;
+ io_parms.length = attrs->ia_size;
+ rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
+ NULL, NULL, 1);
cFYI(1, "Wrt seteof rc %d", rc);
}
} else
@@ -1930,10 +1937,15 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc == 0) {
unsigned int bytes_written;
- rc = CIFSSMBWrite(xid, pTcon, netfid, 0,
- attrs->ia_size,
- &bytes_written, NULL,
- NULL, 1);
+
+ io_parms.netfid = netfid;
+ io_parms.pid = current->tgid;
+ io_parms.tcon = pTcon;
+ io_parms.offset = 0;
+ io_parms.length = attrs->ia_size;
+ rc = CIFSSMBWrite(xid, &io_parms,
+ &bytes_written,
+ NULL, NULL, 1);
cFYI(1, "wrt seteof rc %d", rc);
CIFSSMBClose(xid, pTcon, netfid);
}