diff options
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/file.c | 68 |
1 files changed, 37 insertions, 31 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index e5f463e15c9..de046e183d1 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1353,6 +1353,15 @@ static int cifs_writepages(struct address_space *mapping, int scanned = 0; int xid, long_op; + /* + * BB: Is this meaningful for a non-block-device file system? + * If it is, we should test it again after we do I/O + */ + if (wbc->nonblocking && bdi_write_congested(bdi)) { + wbc->encountered_congestion = 1; + return 0; + } + cifs_sb = CIFS_SB(mapping->host->i_sb); /* @@ -1362,26 +1371,28 @@ static int cifs_writepages(struct address_space *mapping, if (cifs_sb->wsize < PAGE_CACHE_SIZE) return generic_writepages(mapping, wbc); - if ((cifs_sb->tcon->ses) && (cifs_sb->tcon->ses->server)) - if (cifs_sb->tcon->ses->server->secMode & - (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) - if (!experimEnabled) - return generic_writepages(mapping, wbc); - iov = kmalloc(32 * sizeof(struct kvec), GFP_KERNEL); if (iov == NULL) return generic_writepages(mapping, wbc); - /* - * BB: Is this meaningful for a non-block-device file system? - * If it is, we should test it again after we do I/O + * if there's no open file, then this is likely to fail too, + * but it'll at least handle the return. Maybe it should be + * a BUG() instead? */ - if (wbc->nonblocking && bdi_write_congested(bdi)) { - wbc->encountered_congestion = 1; + open_file = find_writable_file(CIFS_I(mapping->host)); + if (!open_file) { kfree(iov); - return 0; + return generic_writepages(mapping, wbc); + } + + tcon = open_file->tcon; + if (!experimEnabled && tcon->ses->server->secMode & + (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) { + cifsFileInfo_put(open_file); + return generic_writepages(mapping, wbc); } + cifsFileInfo_put(open_file); xid = GetXid(); @@ -1486,38 +1497,33 @@ retry: break; } if (n_iov) { - /* Search for a writable handle every time we call - * CIFSSMBWrite2. We can't rely on the last handle - * we used to still be valid - */ open_file = find_writable_file(CIFS_I(mapping->host)); if (!open_file) { cERROR(1, "No writable handles for inode"); rc = -EBADF; } else { - tcon = open_file->tcon; long_op = cifs_write_timeout(cifsi, offset); - rc = CIFSSMBWrite2(xid, tcon, - open_file->netfid, + rc = CIFSSMBWrite2(xid, tcon, open_file->netfid, bytes_to_write, offset, &bytes_written, iov, n_iov, long_op); cifsFileInfo_put(open_file); cifs_update_eof(cifsi, offset, bytes_written); + } - 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); - } else { - cifs_stats_bytes_written(tcon, bytes_written); - } + 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); + } else { + cifs_stats_bytes_written(tcon, bytes_written); } + for (i = 0; i < n_iov; i++) { page = pvec.pages[first + i]; /* Should we also set page error on |