write_behind_rc is redundant and just adds complexity to the code. What
we really want to do instead is to use mapping_set_error to reset the
flags on the mapping when we find a writeback error and can't report it
to userspace yet.
For cifs_flush and cifs_fsync, we shouldn't reset the flags since errors
returned there do get reported to userspace.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/cifs/cifsfs.c | 1 -
fs/cifs/cifsglob.h | 1 -
fs/cifs/file.c | 31 +++++++------------------------
fs/cifs/inode.c | 15 +++++----------
4 files changed, 12 insertions(+), 36 deletions(-)
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 6e3a69a..8ec650e 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -320,7 +320,6 @@ cifs_alloc_inode(struct super_block *sb)
return NULL;
cifs_inode->cifsAttrs = 0x20; /* default */
cifs_inode->time = 0;
- cifs_inode->write_behind_rc = 0;
/* Until the file is open and we have gotten oplock
info back from the server, can not assume caching of
file data or metadata */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 06024c5..08187ca 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -415,7 +415,6 @@ struct cifsInodeInfo {
struct list_head lockList;
/* BB add in lists for dirty pages i.e. write caching info for oplock */
struct list_head openFileList;
- int write_behind_rc;
__u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
unsigned long time; /* jiffies of last update/check of inode */
bool clientCanCacheRead:1; /* read oplock */
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 4298c19..4425a43 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -133,8 +133,7 @@ static inline int cifs_open_inode_helper(struct inode *inode,
/* BB no need to lock inode until after invalidate
since namei code should already have it locked? */
rc = filemap_write_and_wait(inode->i_mapping);
- if (rc != 0)
- pCifsInode->write_behind_rc = rc;
+ mapping_set_error(inode->i_mapping, rc);
}
cFYI(1, "invalidating remote inode since open detected it "
"changed");
@@ -545,8 +544,7 @@ reopen_success:
if (pCifsInode) {
if (can_flush) {
rc = filemap_write_and_wait(inode->i_mapping);
- if (rc != 0)
- CIFS_I(inode)->write_behind_rc = rc;
+ mapping_set_error(inode->i_mapping, rc);
/* temporarily disable caching while we
go to server to get inode info */
pCifsInode->clientCanCacheAll = false;
@@ -1429,12 +1427,7 @@ retry:
if (rc || bytes_written < bytes_to_write) {
cERROR(1, "Write2 ret %d, wrote %d",
rc, bytes_written);
- /* BB what if continued retry is
- requested via mount flags? */
- if (rc == -ENOSPC)
- set_bit(AS_ENOSPC, &mapping->flags);
- else
- set_bit(AS_EIO, &mapping->flags);
+ mapping_set_error(mapping, rc);
} else {
cifs_stats_bytes_written(tcon, bytes_written);
}
@@ -1579,10 +1572,8 @@ int cifs_fsync(struct file *file, int datasync)
rc = filemap_write_and_wait(inode->i_mapping);
if (rc == 0) {
- rc = CIFS_I(inode)->write_behind_rc;
- CIFS_I(inode)->write_behind_rc = 0;
tcon = tlink_tcon(smbfile->tlink);
- if (!rc && tcon && smbfile &&
+ if (rc == 0 &&
!(CIFS_SB(inode->i_sb)->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC))
rc = CIFSSMBFlush(xid, tcon, smbfile->netfid);
}
@@ -1629,11 +1620,6 @@ int cifs_flush(struct file *file, fl_owner_t id)
int rc = 0;
rc = filemap_write_and_wait(inode->i_mapping);
- /* reset wb rc if we were able to write out dirty pages */
- if (!rc) {
- rc = CIFS_I(inode)->write_behind_rc;
- CIFS_I(inode)->write_behind_rc = 0;
- }
cFYI(1, "Flush inode %p file %p rc %d", inode, file, rc);
@@ -2212,7 +2198,7 @@ void cifs_oplock_break(struct work_struct *work)
oplock_break);
struct inode *inode = cfile->dentry->d_inode;
struct cifsInodeInfo *cinode = CIFS_I(inode);
- int rc, waitrc = 0;
+ int rc = 0;
if (inode && S_ISREG(inode->i_mode)) {
if (cinode->clientCanCacheRead)
@@ -2221,13 +2207,10 @@ void cifs_oplock_break(struct work_struct *work)
break_lease(inode, O_WRONLY);
rc = filemap_fdatawrite(inode->i_mapping);
if (cinode->clientCanCacheRead == 0) {
- waitrc = filemap_fdatawait(inode->i_mapping);
+ rc = filemap_fdatawait(inode->i_mapping);
+ mapping_set_error(inode->i_mapping, rc);
invalidate_remote_inode(inode);
}
- if (!rc)
- rc = waitrc;
- if (rc)
- cinode->write_behind_rc = rc;
cFYI(1, "Oplock flush inode %p rc %d", inode, rc);
}
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index d6db805..c6aa014 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1688,8 +1688,7 @@ cifs_invalidate_mapping(struct inode *inode)
/* write back any cached data */
if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
rc = filemap_write_and_wait(inode->i_mapping);
- if (rc)
- cifs_i->write_behind_rc = rc;
+ mapping_set_error(inode->i_mapping, rc);
}
invalidate_remote_inode(inode);
cifs_fscache_reset_inode_cookie(inode);
@@ -1941,10 +1940,8 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
* the flush returns error?
*/
rc = filemap_write_and_wait(inode->i_mapping);
- if (rc != 0) {
- cifsInode->write_behind_rc = rc;
- rc = 0;
- }
+ mapping_set_error(inode->i_mapping, rc);
+ rc = 0;
if (attrs->ia_valid & ATTR_SIZE) {
rc = cifs_set_file_size(inode, attrs, xid, full_path);
@@ -2085,10 +2082,8 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
* the flush returns error?
*/
rc = filemap_write_and_wait(inode->i_mapping);
- if (rc != 0) {
- cifsInode->write_behind_rc = rc;
- rc = 0;
- }
+ mapping_set_error(inode->i_mapping, rc);
+ rc = 0;
if (attrs->ia_valid & ATTR_SIZE) {
rc = cifs_set_file_size(inode, attrs, xid, full_path);
--
1.7.2.3
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