#include <linux/buffer_head.h>
#include <linux/mpage.h>
#include <linux/fiemap.h>
+#include <linux/namei.h>
#include "ext2.h"
#include "acl.h"
#include "xip.h"
MODULE_DESCRIPTION("Second Extended Filesystem");
MODULE_LICENSE("GPL");
-static int ext2_update_inode(struct inode * inode, int do_sync);
-
/*
* Test whether an inode is a fast symlink.
*/
goto no_delete;
EXT2_I(inode)->i_dtime = get_seconds();
mark_inode_dirty(inode);
- ext2_update_inode(inode, inode_needs_sync(inode));
+ ext2_write_inode(inode, inode_needs_sync(inode));
inode->i_size = 0;
if (inode->i_blocks)
int final = 0;
if (i_block < 0) {
- ext2_warning (inode->i_sb, "ext2_block_to_path", "block < 0");
+ ext2_msg(inode->i_sb, KERN_WARNING,
+ "warning: %s: block < 0", __func__);
} else if (i_block < direct_blocks) {
offsets[n++] = i_block;
final = direct_blocks;
offsets[n++] = i_block & (ptrs - 1);
final = ptrs;
} else {
- ext2_warning (inode->i_sb, "ext2_block_to_path", "block > big");
+ ext2_msg(inode->i_sb, KERN_WARNING,
+ "warning: %s: block is too big", __func__);
}
if (boundary)
*boundary = final - 1 - (i_block & (ptrs - 1));
unlock_buffer(bh);
mark_buffer_dirty_inode(bh, inode);
/* We used to sync bh here if IS_SYNC(inode).
- * But we now rely upon generic_osync_inode()
+ * But we now rely upon generic_write_sync()
* and b_inode_buffers. But not for directories.
*/
if (S_ISDIR(inode->i_mode) && IS_DIRSYNC(inode))
* ext2_splice_branch - splice the allocated branch onto inode.
* @inode: owner
* @block: (logical) number of block we are adding
- * @chain: chain of indirect blocks (with a missing link - see
- * ext2_alloc_branch)
* @where: location of missing link
* @num: number of indirect blocks we are adding
* @blks: number of direct blocks we are adding
if (depth == 0)
return (err);
-reread:
- partial = ext2_get_branch(inode, depth, offsets, chain, &err);
+ partial = ext2_get_branch(inode, depth, offsets, chain, &err);
/* Simplest case - block found, no allocation needed */
if (!partial) {
first_block = le32_to_cpu(chain[depth - 1].key);
while (count < maxblocks && count <= blocks_to_boundary) {
ext2_fsblk_t blk;
- if (!verify_chain(chain, partial)) {
+ if (!verify_chain(chain, chain + depth - 1)) {
/*
* Indirect block might be removed by
* truncate while we were reading it.
* Handling of that case: forget what we've
* got now, go to reread.
*/
+ err = -EAGAIN;
count = 0;
- goto changed;
+ break;
}
blk = le32_to_cpu(*(chain[depth-1].p + count));
if (blk == first_block + count)
else
break;
}
- goto got_it;
+ if (err != -EAGAIN)
+ goto got_it;
}
/* Next simple case - plain lookup or failed read of indirect block */
goto cleanup;
mutex_lock(&ei->truncate_mutex);
+ /*
+ * If the indirect block is missing while we are reading
+ * the chain(ext3_get_branch() returns -EAGAIN err), or
+ * if the chain has been changed after we grab the semaphore,
+ * (either because another process truncated this branch, or
+ * another get_block allocated this branch) re-grab the chain to see if
+ * the request block has been allocated or not.
+ *
+ * Since we already block the truncate/other get_block
+ * at this point, we will have the current copy of the chain when we
+ * splice the branch into the tree.
+ */
+ if (err == -EAGAIN || !verify_chain(chain, partial)) {
+ while (partial > chain) {
+ brelse(partial->bh);
+ partial--;
+ }
+ partial = ext2_get_branch(inode, depth, offsets, chain, &err);
+ if (!partial) {
+ count++;
+ mutex_unlock(&ei->truncate_mutex);
+ if (err)
+ goto cleanup;
+ clear_buffer_new(bh_result);
+ goto got_it;
+ }
+ }
/*
* Okay, we need to do block allocation. Lazily initialize the block
partial--;
}
return err;
-changed:
- while (partial > chain) {
- brelse(partial->bh);
- partial--;
- }
- goto reread;
}
int ext2_get_block(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create)
.writepages = ext2_writepages,
.migratepage = buffer_migrate_page,
.is_partially_uptodate = block_is_partially_uptodate,
+ .error_remove_page = generic_error_remove_page,
};
const struct address_space_operations ext2_aops_xip = {
.direct_IO = ext2_direct_IO,
.writepages = ext2_writepages,
.migratepage = buffer_migrate_page,
+ .error_remove_page = generic_error_remove_page,
};
/*
return inode;
ei = EXT2_I(inode);
-#ifdef CONFIG_EXT2_FS_POSIX_ACL
- ei->i_acl = EXT2_ACL_NOT_CACHED;
- ei->i_default_acl = EXT2_ACL_NOT_CACHED;
-#endif
ei->i_block_alloc_info = NULL;
raw_inode = ext2_get_inode(inode->i_sb, ino, &bh);
else
inode->i_mapping->a_ops = &ext2_aops;
} else if (S_ISLNK(inode->i_mode)) {
- if (ext2_inode_is_fast_symlink(inode))
+ if (ext2_inode_is_fast_symlink(inode)) {
inode->i_op = &ext2_fast_symlink_inode_operations;
- else {
+ nd_terminate_link(ei->i_data, inode->i_size,
+ sizeof(ei->i_data) - 1);
+ } else {
inode->i_op = &ext2_symlink_inode_operations;
if (test_opt(inode->i_sb, NOBH))
inode->i_mapping->a_ops = &ext2_nobh_aops;
return ERR_PTR(ret);
}
-static int ext2_update_inode(struct inode * inode, int do_sync)
+int ext2_write_inode(struct inode *inode, int do_sync)
{
struct ext2_inode_info *ei = EXT2_I(inode);
struct super_block *sb = inode->i_sb;
return err;
}
-int ext2_write_inode(struct inode *inode, int wait)
-{
- return ext2_update_inode(inode, wait);
-}
-
int ext2_sync_inode(struct inode *inode)
{
struct writeback_control wbc = {
return error;
if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
(iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
- error = DQUOT_TRANSFER(inode, iattr) ? -EDQUOT : 0;
+ error = vfs_dq_transfer(inode, iattr) ? -EDQUOT : 0;
if (error)
return error;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff