*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
+ * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/pagemap.h>
#include <linux/quotaops.h>
#include "jfs_incore.h"
+#include "jfs_inode.h"
#include "jfs_filsys.h"
#include "jfs_imap.h"
#include "jfs_extent.h"
#include "jfs_debug.h"
-extern struct inode_operations jfs_dir_inode_operations;
-extern struct inode_operations jfs_file_inode_operations;
-extern struct inode_operations jfs_symlink_inode_operations;
-extern struct file_operations jfs_dir_operations;
-extern struct file_operations jfs_file_operations;
-struct address_space_operations jfs_aops;
-extern int freeZeroLink(struct inode *);
-
-void jfs_read_inode(struct inode *inode)
+struct inode *jfs_iget(struct super_block *sb, unsigned long ino)
{
- if (diRead(inode)) {
- make_bad_inode(inode);
- return;
+ struct inode *inode;
+ int ret;
+
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+
+ ret = diRead(inode);
+ if (ret < 0) {
+ iget_failed(inode);
+ return ERR_PTR(ret);
}
if (S_ISREG(inode->i_mode)) {
if (inode->i_size >= IDATASIZE) {
inode->i_op = &page_symlink_inode_operations;
inode->i_mapping->a_ops = &jfs_aops;
- } else
+ } else {
inode->i_op = &jfs_symlink_inode_operations;
+ /*
+ * The inline data should be null-terminated, but
+ * don't let on-disk corruption crash the kernel
+ */
+ JFS_IP(inode)->i_inline[inode->i_size] = '\0';
+ }
} else {
inode->i_op = &jfs_file_inode_operations;
init_special_inode(inode, inode->i_mode, inode->i_rdev);
}
+ unlock_new_inode(inode);
+ return inode;
}
/*
}
tid = txBegin(inode->i_sb, COMMIT_INODE);
- down(&JFS_IP(inode)->commit_sem);
+ mutex_lock(&JFS_IP(inode)->commit_mutex);
/*
- * Retest inode state after taking commit_sem
+ * Retest inode state after taking commit_mutex
*/
if (inode->i_nlink && test_cflag(COMMIT_Dirty, inode))
rc = txCommit(tid, 1, &inode, wait ? COMMIT_SYNC : 0);
txEnd(tid);
- up(&JFS_IP(inode)->commit_sem);
+ mutex_unlock(&JFS_IP(inode)->commit_mutex);
return rc;
}
{
jfs_info("In jfs_delete_inode, inode = 0x%p", inode);
- if (test_cflag(COMMIT_Freewmap, inode))
- freeZeroLink(inode);
+ if (!is_bad_inode(inode) &&
+ (JFS_IP(inode)->fileset == FILESYSTEM_I)) {
+ truncate_inode_pages(&inode->i_data, 0);
- diFree(inode);
+ if (test_cflag(COMMIT_Freewmap, inode))
+ jfs_free_zero_link(inode);
- /*
- * Free the inode from the quota allocation.
- */
- DQUOT_INIT(inode);
- DQUOT_FREE_INODE(inode);
- DQUOT_DROP(inode);
+ diFree(inode);
+
+ /*
+ * Free the inode from the quota allocation.
+ */
+ vfs_dq_init(inode);
+ vfs_dq_free_inode(inode);
+ vfs_dq_drop(inode);
+ }
clear_inode(inode);
}
set_cflag(COMMIT_Dirty, inode);
}
-static int
-jfs_get_blocks(struct inode *ip, sector_t lblock, unsigned long max_blocks,
- struct buffer_head *bh_result, int create)
+int jfs_get_block(struct inode *ip, sector_t lblock,
+ struct buffer_head *bh_result, int create)
{
s64 lblock64 = lblock;
int rc = 0;
xad_t xad;
s64 xaddr;
int xflag;
- s32 xlen = max_blocks;
+ s32 xlen = bh_result->b_size >> ip->i_blkbits;
/*
* Take appropriate lock on inode
*/
if (create)
- IWRITE_LOCK(ip);
+ IWRITE_LOCK(ip, RDWRLOCK_NORMAL);
else
- IREAD_LOCK(ip);
+ IREAD_LOCK(ip, RDWRLOCK_NORMAL);
if (((lblock64 << ip->i_sb->s_blocksize_bits) < ip->i_size) &&
- (!xtLookup(ip, lblock64, max_blocks, &xflag, &xaddr, &xlen, 0)) &&
+ (!xtLookup(ip, lblock64, xlen, &xflag, &xaddr, &xlen, 0)) &&
xaddr) {
if (xflag & XAD_NOTRECORDED) {
if (!create)
#ifdef _JFS_4K
if ((rc = extHint(ip, lblock64 << ip->i_sb->s_blocksize_bits, &xad)))
goto unlock;
- rc = extAlloc(ip, xlen, lblock64, &xad, FALSE);
+ rc = extAlloc(ip, xlen, lblock64, &xad, false);
if (rc)
goto unlock;
return rc;
}
-static int jfs_get_block(struct inode *ip, sector_t lblock,
- struct buffer_head *bh_result, int create)
-{
- return jfs_get_blocks(ip, lblock, 1, bh_result, create);
-}
-
static int jfs_writepage(struct page *page, struct writeback_control *wbc)
{
- return nobh_writepage(page, jfs_get_block, wbc);
+ return block_write_full_page(page, jfs_get_block, wbc);
}
static int jfs_writepages(struct address_space *mapping,
return mpage_readpages(mapping, pages, nr_pages, jfs_get_block);
}
-static int jfs_prepare_write(struct file *file,
- struct page *page, unsigned from, unsigned to)
+static int jfs_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
{
- return nobh_prepare_write(page, from, to, jfs_get_block);
+ return nobh_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+ jfs_get_block);
}
static sector_t jfs_bmap(struct address_space *mapping, sector_t block)
struct inode *inode = file->f_mapping->host;
return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
- offset, nr_segs, jfs_get_blocks, NULL);
+ offset, nr_segs, jfs_get_block, NULL);
}
-struct address_space_operations jfs_aops = {
+const struct address_space_operations jfs_aops = {
.readpage = jfs_readpage,
.readpages = jfs_readpages,
.writepage = jfs_writepage,
.writepages = jfs_writepages,
.sync_page = block_sync_page,
- .prepare_write = jfs_prepare_write,
- .commit_write = nobh_commit_write,
+ .write_begin = jfs_write_begin,
+ .write_end = nobh_write_end,
.bmap = jfs_bmap,
.direct_IO = jfs_direct_IO,
};
tid = txBegin(ip->i_sb, 0);
/*
- * The commit_sem cannot be taken before txBegin.
+ * The commit_mutex cannot be taken before txBegin.
* txBegin may block and there is a chance the inode
* could be marked dirty and need to be committed
* before txBegin unblocks
*/
- down(&JFS_IP(ip)->commit_sem);
+ mutex_lock(&JFS_IP(ip)->commit_mutex);
newsize = xtTruncate(tid, ip, length,
COMMIT_TRUNCATE | COMMIT_PWMAP);
if (newsize < 0) {
txEnd(tid);
- up(&JFS_IP(ip)->commit_sem);
+ mutex_unlock(&JFS_IP(ip)->commit_mutex);
break;
}
txCommit(tid, 1, &ip, 0);
txEnd(tid);
- up(&JFS_IP(ip)->commit_sem);
+ mutex_unlock(&JFS_IP(ip)->commit_mutex);
} while (newsize > length); /* Truncate isn't always atomic */
}
{
jfs_info("jfs_truncate: size = 0x%lx", (ulong) ip->i_size);
- nobh_truncate_page(ip->i_mapping, ip->i_size);
+ nobh_truncate_page(ip->i_mapping, ip->i_size, jfs_get_block);
- IWRITE_LOCK(ip);
+ IWRITE_LOCK(ip, RDWRLOCK_NORMAL);
jfs_truncate_nolock(ip, ip->i_size);
IWRITE_UNLOCK(ip);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff