* Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
*/
-#include <linux/config.h>
#include <linux/time.h>
#include <linux/fs.h>
#include <linux/reiserfs_fs.h>
#include <linux/reiserfs_acl.h>
#include <linux/reiserfs_xattr.h>
+#include <linux/exportfs.h>
#include <linux/smp_lock.h>
#include <linux/pagemap.h>
#include <linux/highmem.h>
#include <linux/mpage.h>
#include <linux/writeback.h>
#include <linux/quotaops.h>
+#include <linux/swap.h>
-extern int reiserfs_default_io_size; /* default io size devuned in super.c */
-
-static int reiserfs_commit_write(struct file *f, struct page *page,
- unsigned from, unsigned to);
-static int reiserfs_prepare_write(struct file *f, struct page *page,
- unsigned from, unsigned to);
+int reiserfs_commit_write(struct file *f, struct page *page,
+ unsigned from, unsigned to);
+int reiserfs_prepare_write(struct file *f, struct page *page,
+ unsigned from, unsigned to);
void reiserfs_delete_inode(struct inode *inode)
{
JOURNAL_PER_BALANCE_CNT * 2 +
2 * REISERFS_QUOTA_INIT_BLOCKS(inode->i_sb);
struct reiserfs_transaction_handle th;
+ int err;
truncate_inode_pages(&inode->i_data, 0);
/* The = 0 happens when we abort creating a new inode for some reason like lack of space.. */
if (!(inode->i_state & I_NEW) && INODE_PKEY(inode)->k_objectid != 0) { /* also handles bad_inode case */
- down(&inode->i_sem);
-
reiserfs_delete_xattrs(inode);
- if (journal_begin(&th, inode->i_sb, jbegin_count)) {
- up(&inode->i_sem);
+ if (journal_begin(&th, inode->i_sb, jbegin_count))
goto out;
- }
reiserfs_update_inode_transaction(inode);
- if (reiserfs_delete_object(&th, inode)) {
- up(&inode->i_sem);
- goto out;
- }
+ reiserfs_discard_prealloc(&th, inode);
+
+ err = reiserfs_delete_object(&th, inode);
/* Do quota update inside a transaction for journaled quotas. We must do that
* after delete_object so that quota updates go into the same transaction as
* stat data deletion */
- DQUOT_FREE_INODE(inode);
+ if (!err)
+ vfs_dq_free_inode(inode);
- if (journal_end(&th, inode->i_sb, jbegin_count)) {
- up(&inode->i_sem);
+ if (journal_end(&th, inode->i_sb, jbegin_count))
goto out;
- }
- up(&inode->i_sem);
+ /* check return value from reiserfs_delete_object after
+ * ending the transaction
+ */
+ if (err)
+ goto out;
/* all items of file are deleted, so we can remove "save" link */
remove_save_link(inode, 0 /* not truncate */ ); /* we can't do anything
// files which were created in the earlier version can not be longer,
// than 2 gb
//
-static int file_capable(struct inode *inode, long block)
+static int file_capable(struct inode *inode, sector_t block)
{
if (get_inode_item_key_version(inode) != KEY_FORMAT_3_5 || // it is new file.
block < (1 << (31 - inode->i_sb->s_blocksize_bits))) // old file, but 'block' is inside of 2gb
return 0;
}
-/*static*/ int restart_transaction(struct reiserfs_transaction_handle *th,
- struct inode *inode, struct path *path)
+static int restart_transaction(struct reiserfs_transaction_handle *th,
+ struct inode *inode, struct treepath *path)
{
struct super_block *s = th->t_super;
int len = th->t_blocks_allocated;
BUG_ON(!th->t_trans_id);
BUG_ON(!th->t_refcount);
+ pathrelse(path);
+
/* we cannot restart while nested */
if (th->t_refcount > 1) {
return 0;
}
- pathrelse(path);
reiserfs_update_sd(th, inode);
err = journal_end(th, s, len);
if (!err) {
// Please improve the english/clarity in the comment above, as it is
// hard to understand.
-static int _get_block_create_0(struct inode *inode, long block,
+static int _get_block_create_0(struct inode *inode, sector_t block,
struct buffer_head *bh_result, int args)
{
INITIALIZE_PATH(path);
struct buffer_head *bh;
struct item_head *ih, tmp_ih;
int fs_gen;
- int blocknr;
+ b_blocknr_t blocknr;
char *p = NULL;
int chars;
int ret;
}
/* make sure we don't read more bytes than actually exist in
** the file. This can happen in odd cases where i_size isn't
- ** correct, and when direct item padding results in a few
+ ** correct, and when direct item padding results in a few
** extra bytes at the end of the direct item
*/
if ((le_ih_k_offset(ih) + path.pos_in_item) > inode->i_size)
** -ENOENT instead of a valid buffer. block_prepare_write expects to
** be able to do i/o on the buffers returned, unless an error value
** is also returned.
-**
+**
** So, this allows block_prepare_write to be used for reading a single block
** in a page. Where it does not produce a valid page for holes, or past the
** end of the file. This turns out to be exactly what we need for reading
** tails for conversion.
**
** The point of the wrapper is forcing a certain value for create, even
-** though the VFS layer is calling this function with create==1. If you
-** don't want to send create == GET_BLOCK_NO_HOLE to reiserfs_get_block,
+** though the VFS layer is calling this function with create==1. If you
+** don't want to send create == GET_BLOCK_NO_HOLE to reiserfs_get_block,
** don't use this function.
*/
static int reiserfs_get_block_create_0(struct inode *inode, sector_t block,
direct_IO request. */
static int reiserfs_get_blocks_direct_io(struct inode *inode,
sector_t iblock,
- unsigned long max_blocks,
struct buffer_head *bh_result,
int create)
{
/* we don't have to make sure the conversion did not happen while
** we were locking the page because anyone that could convert
- ** must first take i_sem.
+ ** must first take i_mutex.
**
** We must fix the tail page for writing because it might have buffers
** that are mapped, but have a block number of 0. This indicates tail
}
static inline int _allocate_block(struct reiserfs_transaction_handle *th,
- long block,
+ sector_t block,
struct inode *inode,
b_blocknr_t * allocated_block_nr,
- struct path *path, int flags)
+ struct treepath *path, int flags)
{
BUG_ON(!th->t_trans_id);
#ifdef REISERFS_PREALLOCATE
- if (!(flags & GET_BLOCK_NO_ISEM)) {
+ if (!(flags & GET_BLOCK_NO_IMUX)) {
return reiserfs_new_unf_blocknrs2(th, inode, allocated_block_nr,
path, block);
}
int done;
int fs_gen;
struct reiserfs_transaction_handle *th = NULL;
- /* space reserved in transaction batch:
+ /* space reserved in transaction batch:
. 3 balancings in direct->indirect conversion
. 1 block involved into reiserfs_update_sd()
XXX in practically impossible worst case direct2indirect()
reiserfs_write_lock(inode->i_sb);
version = get_inode_item_key_version(inode);
- if (block < 0) {
- reiserfs_write_unlock(inode->i_sb);
- return -EIO;
- }
-
if (!file_capable(inode, block)) {
reiserfs_write_unlock(inode->i_sb);
return -EFBIG;
reiserfs_write_unlock(inode->i_sb);
/* the item was found, so new blocks were not added to the file
- ** there is no need to make sure the inode is updated with this
+ ** there is no need to make sure the inode is updated with this
** transaction
*/
return retval;
tail_offset);
if (retval) {
if (retval != -ENOSPC)
- reiserfs_warning(inode->i_sb,
- "clm-6004: convert tail failed inode %lu, error %d",
- inode->i_ino,
- retval);
+ reiserfs_error(inode->i_sb,
+ "clm-6004",
+ "convert tail failed "
+ "inode %lu, error %d",
+ inode->i_ino,
+ retval);
if (allocated_block_nr) {
/* the bitmap, the super, and the stat data == 3 */
if (!th)
//pos_in_item * inode->i_sb->s_blocksize,
TYPE_INDIRECT, 3); // key type is unimportant
+ RFALSE(cpu_key_k_offset(&tmp_key) > cpu_key_k_offset(&key),
+ "green-805: invalid offset");
blocks_needed =
1 +
((cpu_key_k_offset(&key) -
cpu_key_k_offset(&tmp_key)) >> inode->i_sb->
s_blocksize_bits);
- RFALSE(blocks_needed < 0, "green-805: invalid offset");
if (blocks_needed == 1) {
un = &unf_single;
} else {
- un = kmalloc(min(blocks_needed, max_to_insert) * UNFM_P_SIZE, GFP_ATOMIC); // We need to avoid scheduling.
+ un = kzalloc(min(blocks_needed, max_to_insert) * UNFM_P_SIZE, GFP_ATOMIC); // We need to avoid scheduling.
if (!un) {
un = &unf_single;
blocks_needed = 1;
max_to_insert = 0;
- } else
- memset(un, 0,
- UNFM_P_SIZE * min(blocks_needed,
- max_to_insert));
+ }
}
if (blocks_needed <= max_to_insert) {
/* we are going to add target block to the file. Use allocated
/* this loop could log more blocks than we had originally asked
** for. So, we have to allow the transaction to end if it is
- ** too big or too full. Update the inode so things are
+ ** too big or too full. Update the inode so things are
** consistent if we crash before the function returns
**
** release the path so that anybody waiting on the path before
if (retval)
goto failure;
}
- /* inserting indirect pointers for a hole can take a
+ /* inserting indirect pointers for a hole can take a
** long time. reschedule if needed
*/
cond_resched();
goto failure;
}
if (retval == POSITION_FOUND) {
- reiserfs_warning(inode->i_sb,
- "vs-825: reiserfs_get_block: "
+ reiserfs_warning(inode->i_sb, "vs-825",
"%K should not be found", &key);
retval = -EEXIST;
if (allocated_block_nr)
//
// called by read_locked_inode
-static void init_inode(struct inode *inode, struct path *path)
+static void init_inode(struct inode *inode, struct treepath *path)
{
struct buffer_head *bh;
struct item_head *ih;
ih = PATH_PITEM_HEAD(path);
copy_key(INODE_PKEY(inode), &(ih->ih_key));
- inode->i_blksize = reiserfs_default_io_size;
INIT_LIST_HEAD(&(REISERFS_I(inode)->i_prealloc_list));
REISERFS_I(inode)->i_flags = 0;
REISERFS_I(inode)->i_prealloc_count = 0;
REISERFS_I(inode)->i_trans_id = 0;
REISERFS_I(inode)->i_jl = NULL;
- REISERFS_I(inode)->i_acl_access = NULL;
- REISERFS_I(inode)->i_acl_default = NULL;
- init_rwsem(&REISERFS_I(inode)->xattr_sem);
+ mutex_init(&(REISERFS_I(inode)->i_mmap));
+ reiserfs_init_xattr_rwsem(inode);
if (stat_data_v1(ih)) {
struct stat_data_v1 *sd =
/* NOTE, you must prepare the buffer head before sending it here,
** and then log it after the call
*/
-static void update_stat_data(struct path *path, struct inode *inode,
+static void update_stat_data(struct treepath *path, struct inode *inode,
loff_t size)
{
struct buffer_head *bh;
ih = PATH_PITEM_HEAD(path);
if (!is_statdata_le_ih(ih))
- reiserfs_panic(inode->i_sb,
- "vs-13065: update_stat_data: key %k, found item %h",
+ reiserfs_panic(inode->i_sb, "vs-13065", "key %k, found item %h",
INODE_PKEY(inode), ih);
if (stat_data_v1(ih)) {
/* look for the object's stat data */
retval = search_item(inode->i_sb, &key, &path);
if (retval == IO_ERROR) {
- reiserfs_warning(inode->i_sb,
- "vs-13050: reiserfs_update_sd: "
- "i/o failure occurred trying to update %K stat data",
- &key);
+ reiserfs_error(inode->i_sb, "vs-13050",
+ "i/o failure occurred trying to "
+ "update %K stat data", &key);
return;
}
if (retval == ITEM_NOT_FOUND) {
/*reiserfs_warning (inode->i_sb, "vs-13050: reiserfs_update_sd: i_nlink == 0, stat data not found"); */
return;
}
- reiserfs_warning(inode->i_sb,
- "vs-13060: reiserfs_update_sd: "
- "stat data of object %k (nlink == %d) not found (pos %d)",
+ reiserfs_warning(inode->i_sb, "vs-13060",
+ "stat data of object %k (nlink == %d) "
+ "not found (pos %d)",
INODE_PKEY(inode), inode->i_nlink,
pos);
reiserfs_check_path(&path);
/* look for the object's stat data */
retval = search_item(inode->i_sb, &key, &path_to_sd);
if (retval == IO_ERROR) {
- reiserfs_warning(inode->i_sb,
- "vs-13070: reiserfs_read_locked_inode: "
- "i/o failure occurred trying to find stat data of %K",
- &key);
+ reiserfs_error(inode->i_sb, "vs-13070",
+ "i/o failure occurred trying to find "
+ "stat data of %K", &key);
reiserfs_make_bad_inode(inode);
return;
}
update sd on unlink all that is required is to check for nlink
here. This bug was first found by Sizif when debugging
SquidNG/Butterfly, forgotten, and found again after Philippe
- Gramoulle <philippe.gramoulle@mmania.com> reproduced it.
+ Gramoulle <philippe.gramoulle@mmania.com> reproduced it.
More logical fix would require changes in fs/inode.c:iput() to
remove inode from hash-table _after_ fs cleaned disk stuff up and
during mount (fs/reiserfs/super.c:finish_unfinished()). */
if ((inode->i_nlink == 0) &&
!REISERFS_SB(inode->i_sb)->s_is_unlinked_ok) {
- reiserfs_warning(inode->i_sb,
- "vs-13075: reiserfs_read_locked_inode: "
+ reiserfs_warning(inode->i_sb, "vs-13075",
"dead inode read from disk %K. "
"This is likely to be race with knfsd. Ignore",
&key);
return inode;
}
-struct dentry *reiserfs_get_dentry(struct super_block *sb, void *vobjp)
+static struct dentry *reiserfs_get_dentry(struct super_block *sb,
+ u32 objectid, u32 dir_id, u32 generation)
+
{
- __u32 *data = vobjp;
struct cpu_key key;
- struct dentry *result;
struct inode *inode;
- key.on_disk_key.k_objectid = data[0];
- key.on_disk_key.k_dir_id = data[1];
+ key.on_disk_key.k_objectid = objectid;
+ key.on_disk_key.k_dir_id = dir_id;
reiserfs_write_lock(sb);
inode = reiserfs_iget(sb, &key);
- if (inode && !IS_ERR(inode) && data[2] != 0 &&
- data[2] != inode->i_generation) {
+ if (inode && !IS_ERR(inode) && generation != 0 &&
+ generation != inode->i_generation) {
iput(inode);
inode = NULL;
}
reiserfs_write_unlock(sb);
- if (!inode)
- inode = ERR_PTR(-ESTALE);
- if (IS_ERR(inode))
- return ERR_PTR(PTR_ERR(inode));
- result = d_alloc_anon(inode);
- if (!result) {
- iput(inode);
- return ERR_PTR(-ENOMEM);
- }
- return result;
+
+ return d_obtain_alias(inode);
}
-struct dentry *reiserfs_decode_fh(struct super_block *sb, __u32 * data,
- int len, int fhtype,
- int (*acceptable) (void *contect,
- struct dentry * de),
- void *context)
+struct dentry *reiserfs_fh_to_dentry(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
{
- __u32 obj[3], parent[3];
-
/* fhtype happens to reflect the number of u32s encoded.
* due to a bug in earlier code, fhtype might indicate there
* are more u32s then actually fitted.
* 6 - as above plus generation of directory
* 6 does not fit in NFSv2 handles
*/
- if (fhtype > len) {
- if (fhtype != 6 || len != 5)
- reiserfs_warning(sb,
- "nfsd/reiserfs, fhtype=%d, len=%d - odd",
- fhtype, len);
- fhtype = 5;
- }
-
- obj[0] = data[0];
- obj[1] = data[1];
- if (fhtype == 3 || fhtype >= 5)
- obj[2] = data[2];
- else
- obj[2] = 0; /* generation number */
-
- if (fhtype >= 4) {
- parent[0] = data[fhtype >= 5 ? 3 : 2];
- parent[1] = data[fhtype >= 5 ? 4 : 3];
- if (fhtype == 6)
- parent[2] = data[5];
- else
- parent[2] = 0;
+ if (fh_type > fh_len) {
+ if (fh_type != 6 || fh_len != 5)
+ reiserfs_warning(sb, "reiserfs-13077",
+ "nfsd/reiserfs, fhtype=%d, len=%d - odd",
+ fh_type, fh_len);
+ fh_type = 5;
}
- return sb->s_export_op->find_exported_dentry(sb, obj,
- fhtype < 4 ? NULL : parent,
- acceptable, context);
+
+ return reiserfs_get_dentry(sb, fid->raw[0], fid->raw[1],
+ (fh_type == 3 || fh_type >= 5) ? fid->raw[2] : 0);
+}
+
+struct dentry *reiserfs_fh_to_parent(struct super_block *sb, struct fid *fid,
+ int fh_len, int fh_type)
+{
+ if (fh_type < 4)
+ return NULL;
+
+ return reiserfs_get_dentry(sb,
+ (fh_type >= 5) ? fid->raw[3] : fid->raw[2],
+ (fh_type >= 5) ? fid->raw[4] : fid->raw[3],
+ (fh_type == 6) ? fid->raw[5] : 0);
}
int reiserfs_encode_fh(struct dentry *dentry, __u32 * data, int *lenp,
if (inode->i_sb->s_flags & MS_RDONLY)
return -EROFS;
/* memory pressure can sometimes initiate write_inode calls with sync == 1,
- ** these cases are just when the system needs ram, not when the
+ ** these cases are just when the system needs ram, not when the
** inode needs to reach disk for safety, and they can safely be
** ignored because the altered inode has already been logged.
*/
containing "." and ".." entries */
static int reiserfs_new_directory(struct reiserfs_transaction_handle *th,
struct inode *inode,
- struct item_head *ih, struct path *path,
+ struct item_head *ih, struct treepath *path,
struct inode *dir)
{
struct super_block *sb = th->t_super;
/* look for place in the tree for new item */
retval = search_item(sb, &key, path);
if (retval == IO_ERROR) {
- reiserfs_warning(sb, "vs-13080: reiserfs_new_directory: "
- "i/o failure occurred creating new directory");
+ reiserfs_error(sb, "vs-13080",
+ "i/o failure occurred creating new directory");
return -EIO;
}
if (retval == ITEM_FOUND) {
pathrelse(path);
- reiserfs_warning(sb, "vs-13070: reiserfs_new_directory: "
+ reiserfs_warning(sb, "vs-13070",
"object with this key exists (%k)",
&(ih->ih_key));
return -EEXIST;
containing the body of symlink */
static int reiserfs_new_symlink(struct reiserfs_transaction_handle *th, struct inode *inode, /* Inode of symlink */
struct item_head *ih,
- struct path *path, const char *symname,
+ struct treepath *path, const char *symname,
int item_len)
{
struct super_block *sb = th->t_super;
/* look for place in the tree for new item */
retval = search_item(sb, &key, path);
if (retval == IO_ERROR) {
- reiserfs_warning(sb, "vs-13080: reiserfs_new_symlinik: "
- "i/o failure occurred creating new symlink");
+ reiserfs_error(sb, "vs-13080",
+ "i/o failure occurred creating new symlink");
return -EIO;
}
if (retval == ITEM_FOUND) {
pathrelse(path);
- reiserfs_warning(sb, "vs-13080: reiserfs_new_symlink: "
+ reiserfs_warning(sb, "vs-13080",
"object with this key exists (%k)",
&(ih->ih_key));
return -EEXIST;
/* inserts the stat data into the tree, and then calls
reiserfs_new_directory (to insert ".", ".." item if new object is
directory) or reiserfs_new_symlink (to insert symlink body if new
- object is symlink) or nothing (if new object is regular file)
+ object is symlink) or nothing (if new object is regular file)
NOTE! uid and gid must already be set in the inode. If we return
non-zero due to an error, we have to drop the quota previously allocated
if we return non-zero, we also end the transaction. */
int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
struct inode *dir, int mode, const char *symname,
- /* 0 for regular, EMTRY_DIR_SIZE for dirs,
+ /* 0 for regular, EMTRY_DIR_SIZE for dirs,
strlen (symname) for symlinks) */
loff_t i_size, struct dentry *dentry,
- struct inode *inode)
+ struct inode *inode,
+ struct reiserfs_security_handle *security)
{
struct super_block *sb;
+ struct reiserfs_iget_args args;
INITIALIZE_PATH(path_to_key);
struct cpu_key key;
struct item_head ih;
BUG_ON(!th->t_trans_id);
- if (DQUOT_ALLOC_INODE(inode)) {
+ if (vfs_dq_alloc_inode(inode)) {
err = -EDQUOT;
goto out_end_trans;
}
- if (!dir || !dir->i_nlink) {
+ if (!dir->i_nlink) {
err = -EPERM;
goto out_bad_inode;
}
err = -ENOMEM;
goto out_bad_inode;
}
+ args.objectid = inode->i_ino = le32_to_cpu(ih.ih_key.k_objectid);
if (old_format_only(sb))
- /* not a perfect generation count, as object ids can be reused, but
+ make_le_item_head(&ih, NULL, KEY_FORMAT_3_5, SD_OFFSET,
+ TYPE_STAT_DATA, SD_V1_SIZE, MAX_US_INT);
+ else
+ make_le_item_head(&ih, NULL, KEY_FORMAT_3_6, SD_OFFSET,
+ TYPE_STAT_DATA, SD_SIZE, MAX_US_INT);
+ memcpy(INODE_PKEY(inode), &(ih.ih_key), KEY_SIZE);
+ args.dirid = le32_to_cpu(ih.ih_key.k_dir_id);
+ if (insert_inode_locked4(inode, args.objectid,
+ reiserfs_find_actor, &args) < 0) {
+ err = -EINVAL;
+ goto out_bad_inode;
+ }
+ if (old_format_only(sb))
+ /* not a perfect generation count, as object ids can be reused, but
** this is as good as reiserfs can do right now.
** note that the private part of inode isn't filled in yet, we have
** to use the directory.
REISERFS_I(inode)->i_attrs =
REISERFS_I(dir)->i_attrs & REISERFS_INHERIT_MASK;
sd_attrs_to_i_attrs(REISERFS_I(inode)->i_attrs, inode);
- REISERFS_I(inode)->i_acl_access = NULL;
- REISERFS_I(inode)->i_acl_default = NULL;
- init_rwsem(&REISERFS_I(inode)->xattr_sem);
-
- if (old_format_only(sb))
- make_le_item_head(&ih, NULL, KEY_FORMAT_3_5, SD_OFFSET,
- TYPE_STAT_DATA, SD_V1_SIZE, MAX_US_INT);
- else
- make_le_item_head(&ih, NULL, KEY_FORMAT_3_6, SD_OFFSET,
- TYPE_STAT_DATA, SD_SIZE, MAX_US_INT);
+ mutex_init(&(REISERFS_I(inode)->i_mmap));
+ reiserfs_init_xattr_rwsem(inode);
/* key to search for correct place for new stat data */
_make_cpu_key(&key, KEY_FORMAT_3_6, le32_to_cpu(ih.ih_key.k_dir_id),
} else {
inode2sd(&sd, inode, inode->i_size);
}
- // these do not go to on-disk stat data
- inode->i_ino = le32_to_cpu(ih.ih_key.k_objectid);
- inode->i_blksize = reiserfs_default_io_size;
-
// store in in-core inode the key of stat data and version all
// object items will have (directory items will have old offset
// format, other new objects will consist of new items)
- memcpy(INODE_PKEY(inode), &(ih.ih_key), KEY_SIZE);
if (old_format_only(sb) || S_ISDIR(mode) || S_ISLNK(mode))
set_inode_item_key_version(inode, KEY_FORMAT_3_5);
else
goto out_inserted_sd;
}
- /* XXX CHECK THIS */
if (reiserfs_posixacl(inode->i_sb)) {
- retval = reiserfs_inherit_default_acl(dir, dentry, inode);
+ retval = reiserfs_inherit_default_acl(th, dir, dentry, inode);
if (retval) {
err = retval;
reiserfs_check_path(&path_to_key);
goto out_inserted_sd;
}
} else if (inode->i_sb->s_flags & MS_POSIXACL) {
- reiserfs_warning(inode->i_sb, "ACLs aren't enabled in the fs, "
+ reiserfs_warning(inode->i_sb, "jdm-13090",
+ "ACLs aren't enabled in the fs, "
"but vfs thinks they are!");
- } else if (is_reiserfs_priv_object(dir)) {
- reiserfs_mark_inode_private(inode);
+ } else if (IS_PRIVATE(dir))
+ inode->i_flags |= S_PRIVATE;
+
+ if (security->name) {
+ retval = reiserfs_security_write(th, inode, security);
+ if (retval) {
+ err = retval;
+ reiserfs_check_path(&path_to_key);
+ retval = journal_end(th, th->t_super,
+ th->t_blocks_allocated);
+ if (retval)
+ err = retval;
+ goto out_inserted_sd;
+ }
}
- insert_inode_hash(inode);
reiserfs_update_sd(th, inode);
reiserfs_check_path(&path_to_key);
INODE_PKEY(inode)->k_objectid = 0;
/* Quota change must be inside a transaction for journaling */
- DQUOT_FREE_INODE(inode);
+ vfs_dq_free_inode(inode);
out_end_trans:
journal_end(th, th->t_super, th->t_blocks_allocated);
/* Drop can be outside and it needs more credits so it's better to have it outside */
- DQUOT_DROP(inode);
+ vfs_dq_drop(inode);
inode->i_flags |= S_NOQUOTA;
make_bad_inode(inode);
out_inserted_sd:
inode->i_nlink = 0;
th->t_trans_id = 0; /* so the caller can't use this handle later */
-
- /* If we were inheriting an ACL, we need to release the lock so that
- * iput doesn't deadlock in reiserfs_delete_xattrs. The locking
- * code really needs to be reworked, but this will take care of it
- * for now. -jeffm */
- if (REISERFS_I(dir)->i_acl_default && !IS_ERR(REISERFS_I(dir)->i_acl_default)) {
- reiserfs_write_unlock_xattrs(dir->i_sb);
- iput(inode);
- reiserfs_write_lock_xattrs(dir->i_sb);
- } else
- iput(inode);
+ unlock_new_inode(inode); /* OK to do even if we hadn't locked it */
+ iput(inode);
return err;
}
**
** on failure, nonzero is returned, page_result and bh_result are untouched.
*/
-static int grab_tail_page(struct inode *p_s_inode,
+static int grab_tail_page(struct inode *inode,
struct page **page_result,
struct buffer_head **bh_result)
{
/* we want the page with the last byte in the file,
** not the page that will hold the next byte for appending
*/
- unsigned long index = (p_s_inode->i_size - 1) >> PAGE_CACHE_SHIFT;
+ unsigned long index = (inode->i_size - 1) >> PAGE_CACHE_SHIFT;
unsigned long pos = 0;
unsigned long start = 0;
- unsigned long blocksize = p_s_inode->i_sb->s_blocksize;
- unsigned long offset = (p_s_inode->i_size) & (PAGE_CACHE_SIZE - 1);
+ unsigned long blocksize = inode->i_sb->s_blocksize;
+ unsigned long offset = (inode->i_size) & (PAGE_CACHE_SIZE - 1);
struct buffer_head *bh;
struct buffer_head *head;
struct page *page;
if ((offset & (blocksize - 1)) == 0) {
return -ENOENT;
}
- page = grab_cache_page(p_s_inode->i_mapping, index);
+ page = grab_cache_page(inode->i_mapping, index);
error = -ENOMEM;
if (!page) {
goto out;
** I've screwed up the code to find the buffer, or the code to
** call prepare_write
*/
- reiserfs_warning(p_s_inode->i_sb,
- "clm-6000: error reading block %lu on dev %s",
- bh->b_blocknr,
- reiserfs_bdevname(p_s_inode->i_sb));
+ reiserfs_error(inode->i_sb, "clm-6000",
+ "error reading block %lu", bh->b_blocknr);
error = -EIO;
goto unlock;
}
**
** some code taken from block_truncate_page
*/
-int reiserfs_truncate_file(struct inode *p_s_inode, int update_timestamps)
+int reiserfs_truncate_file(struct inode *inode, int update_timestamps)
{
struct reiserfs_transaction_handle th;
/* we want the offset for the first byte after the end of the file */
- unsigned long offset = p_s_inode->i_size & (PAGE_CACHE_SIZE - 1);
- unsigned blocksize = p_s_inode->i_sb->s_blocksize;
+ unsigned long offset = inode->i_size & (PAGE_CACHE_SIZE - 1);
+ unsigned blocksize = inode->i_sb->s_blocksize;
unsigned length;
struct page *page = NULL;
int error;
struct buffer_head *bh = NULL;
+ int err2;
- reiserfs_write_lock(p_s_inode->i_sb);
+ reiserfs_write_lock(inode->i_sb);
- if (p_s_inode->i_size > 0) {
- if ((error = grab_tail_page(p_s_inode, &page, &bh))) {
- // -ENOENT means we truncated past the end of the file,
+ if (inode->i_size > 0) {
+ error = grab_tail_page(inode, &page, &bh);
+ if (error) {
+ // -ENOENT means we truncated past the end of the file,
// and get_block_create_0 could not find a block to read in,
// which is ok.
if (error != -ENOENT)
- reiserfs_warning(p_s_inode->i_sb,
- "clm-6001: grab_tail_page failed %d",
- error);
+ reiserfs_error(inode->i_sb, "clm-6001",
+ "grab_tail_page failed %d",
+ error);
page = NULL;
bh = NULL;
}
}
- /* so, if page != NULL, we have a buffer head for the offset at
- ** the end of the file. if the bh is mapped, and bh->b_blocknr != 0,
- ** then we have an unformatted node. Otherwise, we have a direct item,
- ** and no zeroing is required on disk. We zero after the truncate,
- ** because the truncate might pack the item anyway
+ /* so, if page != NULL, we have a buffer head for the offset at
+ ** the end of the file. if the bh is mapped, and bh->b_blocknr != 0,
+ ** then we have an unformatted node. Otherwise, we have a direct item,
+ ** and no zeroing is required on disk. We zero after the truncate,
+ ** because the truncate might pack the item anyway
** (it will unmap bh if it packs).
*/
/* it is enough to reserve space in transaction for 2 balancings:
one for "save" link adding and another for the first
cut_from_item. 1 is for update_sd */
- error = journal_begin(&th, p_s_inode->i_sb,
+ error = journal_begin(&th, inode->i_sb,
JOURNAL_PER_BALANCE_CNT * 2 + 1);
if (error)
goto out;
- reiserfs_update_inode_transaction(p_s_inode);
+ reiserfs_update_inode_transaction(inode);
if (update_timestamps)
/* we are doing real truncate: if the system crashes before the last
transaction of truncating gets committed - on reboot the file
either appears truncated properly or not truncated at all */
- add_save_link(&th, p_s_inode, 1);
- error = reiserfs_do_truncate(&th, p_s_inode, page, update_timestamps);
- if (error)
- goto out;
+ add_save_link(&th, inode, 1);
+ err2 = reiserfs_do_truncate(&th, inode, page, update_timestamps);
error =
- journal_end(&th, p_s_inode->i_sb, JOURNAL_PER_BALANCE_CNT * 2 + 1);
+ journal_end(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT * 2 + 1);
if (error)
goto out;
+ /* check reiserfs_do_truncate after ending the transaction */
+ if (err2) {
+ error = err2;
+ goto out;
+ }
+
if (update_timestamps) {
- error = remove_save_link(p_s_inode, 1 /* truncate */ );
+ error = remove_save_link(inode, 1 /* truncate */);
if (error)
goto out;
}
length = offset & (blocksize - 1);
/* if we are not on a block boundary */
if (length) {
- char *kaddr;
-
length = blocksize - length;
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + offset, 0, length);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
+ zero_user(page, offset, length);
if (buffer_mapped(bh) && bh->b_blocknr != 0) {
mark_buffer_dirty(bh);
}
page_cache_release(page);
}
- reiserfs_write_unlock(p_s_inode->i_sb);
+ reiserfs_write_unlock(inode->i_sb);
return 0;
out:
if (page) {
unlock_page(page);
page_cache_release(page);
}
- reiserfs_write_unlock(p_s_inode->i_sb);
+ reiserfs_write_unlock(inode->i_sb);
return error;
}
INITIALIZE_PATH(path);
int pos_in_item;
int jbegin_count = JOURNAL_PER_BALANCE_CNT;
- loff_t byte_offset = (block << inode->i_sb->s_blocksize_bits) + 1;
+ loff_t byte_offset = ((loff_t)block << inode->i_sb->s_blocksize_bits)+1;
int retval;
int use_get_block = 0;
int bytes_copied = 0;
/* we've found an unformatted node */
if (indirect_item_found(retval, ih)) {
if (bytes_copied > 0) {
- reiserfs_warning(inode->i_sb,
- "clm-6002: bytes_copied %d",
- bytes_copied);
+ reiserfs_warning(inode->i_sb, "clm-6002",
+ "bytes_copied %d", bytes_copied);
}
if (!get_block_num(item, pos_in_item)) {
/* crap, we are writing to a hole */
goto research;
}
} else {
- reiserfs_warning(inode->i_sb,
- "clm-6003: bad item inode %lu, device %s",
- inode->i_ino, reiserfs_bdevname(inode->i_sb));
+ reiserfs_warning(inode->i_sb, "clm-6003",
+ "bad item inode %lu", inode->i_ino);
retval = -EIO;
goto out;
}
/* this is where we fill in holes in the file. */
if (use_get_block) {
retval = reiserfs_get_block(inode, block, bh_result,
- GET_BLOCK_CREATE | GET_BLOCK_NO_ISEM
+ GET_BLOCK_CREATE | GET_BLOCK_NO_IMUX
| GET_BLOCK_NO_DANGLE);
if (!retval) {
if (!buffer_mapped(bh_result)
return retval;
}
-/*
- * mason@suse.com: updated in 2.5.54 to follow the same general io
+/*
+ * mason@suse.com: updated in 2.5.54 to follow the same general io
* start/recovery path as __block_write_full_page, along with special
* code to handle reiserfs tails.
*/
unsigned long end_index = inode->i_size >> PAGE_CACHE_SHIFT;
int error = 0;
unsigned long block;
+ sector_t last_block;
struct buffer_head *head, *bh;
int partial = 0;
int nr = 0;
int bh_per_page = PAGE_CACHE_SIZE / s->s_blocksize;
th.t_trans_id = 0;
+ /* no logging allowed when nonblocking or from PF_MEMALLOC */
+ if (checked && (current->flags & PF_MEMALLOC)) {
+ redirty_page_for_writepage(wbc, page);
+ unlock_page(page);
+ return 0;
+ }
+
/* The page dirty bit is cleared before writepage is called, which
* means we have to tell create_empty_buffers to make dirty buffers
* The page really should be up to date at this point, so tossing
** last byte in the file
*/
if (page->index >= end_index) {
- char *kaddr;
unsigned last_offset;
last_offset = inode->i_size & (PAGE_CACHE_SIZE - 1);
unlock_page(page);
return 0;
}
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + last_offset, 0, PAGE_CACHE_SIZE - last_offset);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
+ zero_user_segment(page, last_offset, PAGE_CACHE_SIZE);
}
bh = head;
block = page->index << (PAGE_CACHE_SHIFT - s->s_blocksize_bits);
+ last_block = (i_size_read(inode) - 1) >> inode->i_blkbits;
/* first map all the buffers, logging any direct items we find */
do {
- if ((checked || buffer_dirty(bh)) && (!buffer_mapped(bh) ||
- (buffer_mapped(bh)
+ if (block > last_block) {
+ /*
+ * This can happen when the block size is less than
+ * the page size. The corresponding bytes in the page
+ * were zero filled above
+ */
+ clear_buffer_dirty(bh);
+ set_buffer_uptodate(bh);
+ } else if ((checked || buffer_dirty(bh)) &&
+ (!buffer_mapped(bh) || (buffer_mapped(bh)
&& bh->b_blocknr ==
0))) {
/* not mapped yet, or it points to a direct item, search
if (wbc->sync_mode != WB_SYNC_NONE || !wbc->nonblocking) {
lock_buffer(bh);
} else {
- if (test_set_buffer_locked(bh)) {
+ if (!trylock_buffer(bh)) {
redirty_page_for_writepage(wbc, page);
continue;
}
unlock_page(page);
/*
- * since any buffer might be the only dirty buffer on the page,
+ * since any buffer might be the only dirty buffer on the page,
* the first submit_bh can bring the page out of writeback.
* be careful with the buffers.
*/
if (nr == 0) {
/*
* if this page only had a direct item, it is very possible for
- * no io to be required without there being an error. Or,
- * someone else could have locked them and sent them down the
+ * no io to be required without there being an error. Or,
+ * someone else could have locked them and sent them down the
* pipe without locking the page
*/
bh = head;
fail:
/* catches various errors, we need to make sure any valid dirty blocks
- * get to the media. The page is currently locked and not marked for
+ * get to the media. The page is currently locked and not marked for
* writeback
*/
ClearPageUptodate(page);
return reiserfs_write_full_page(page, wbc);
}
-static int reiserfs_prepare_write(struct file *f, struct page *page,
- unsigned from, unsigned to)
+static int reiserfs_write_begin(struct file *file,
+ struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
+{
+ struct inode *inode;
+ struct page *page;
+ pgoff_t index;
+ int ret;
+ int old_ref = 0;
+
+ inode = mapping->host;
+ *fsdata = 0;
+ if (flags & AOP_FLAG_CONT_EXPAND &&
+ (pos & (inode->i_sb->s_blocksize - 1)) == 0) {
+ pos ++;
+ *fsdata = (void *)(unsigned long)flags;
+ }
+
+ index = pos >> PAGE_CACHE_SHIFT;
+ page = grab_cache_page_write_begin(mapping, index, flags);
+ if (!page)
+ return -ENOMEM;
+ *pagep = page;
+
+ reiserfs_wait_on_write_block(inode->i_sb);
+ fix_tail_page_for_writing(page);
+ if (reiserfs_transaction_running(inode->i_sb)) {
+ struct reiserfs_transaction_handle *th;
+ th = (struct reiserfs_transaction_handle *)current->
+ journal_info;
+ BUG_ON(!th->t_refcount);
+ BUG_ON(!th->t_trans_id);
+ old_ref = th->t_refcount;
+ th->t_refcount++;
+ }
+ ret = block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+ reiserfs_get_block);
+ if (ret && reiserfs_transaction_running(inode->i_sb)) {
+ struct reiserfs_transaction_handle *th = current->journal_info;
+ /* this gets a little ugly. If reiserfs_get_block returned an
+ * error and left a transacstion running, we've got to close it,
+ * and we've got to free handle if it was a persistent transaction.
+ *
+ * But, if we had nested into an existing transaction, we need
+ * to just drop the ref count on the handle.
+ *
+ * If old_ref == 0, the transaction is from reiserfs_get_block,
+ * and it was a persistent trans. Otherwise, it was nested above.
+ */
+ if (th->t_refcount > old_ref) {
+ if (old_ref)
+ th->t_refcount--;
+ else {
+ int err;
+ reiserfs_write_lock(inode->i_sb);
+ err = reiserfs_end_persistent_transaction(th);
+ reiserfs_write_unlock(inode->i_sb);
+ if (err)
+ ret = err;
+ }
+ }
+ }
+ if (ret) {
+ unlock_page(page);
+ page_cache_release(page);
+ }
+ return ret;
+}
+
+int reiserfs_prepare_write(struct file *f, struct page *page,
+ unsigned from, unsigned to)
{
struct inode *inode = page->mapping->host;
int ret;
return generic_block_bmap(as, block, reiserfs_bmap);
}
-static int reiserfs_commit_write(struct file *f, struct page *page,
- unsigned from, unsigned to)
+static int reiserfs_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *page, void *fsdata)
+{
+ struct inode *inode = page->mapping->host;
+ int ret = 0;
+ int update_sd = 0;
+ struct reiserfs_transaction_handle *th;
+ unsigned start;
+
+ if ((unsigned long)fsdata & AOP_FLAG_CONT_EXPAND)
+ pos ++;
+
+ reiserfs_wait_on_write_block(inode->i_sb);
+ if (reiserfs_transaction_running(inode->i_sb))
+ th = current->journal_info;
+ else
+ th = NULL;
+
+ start = pos & (PAGE_CACHE_SIZE - 1);
+ if (unlikely(copied < len)) {
+ if (!PageUptodate(page))
+ copied = 0;
+
+ page_zero_new_buffers(page, start + copied, start + len);
+ }
+ flush_dcache_page(page);
+
+ reiserfs_commit_page(inode, page, start, start + copied);
+
+ /* generic_commit_write does this for us, but does not update the
+ ** transaction tracking stuff when the size changes. So, we have
+ ** to do the i_size updates here.
+ */
+ pos += copied;
+ if (pos > inode->i_size) {
+ struct reiserfs_transaction_handle myth;
+ reiserfs_write_lock(inode->i_sb);
+ /* If the file have grown beyond the border where it
+ can have a tail, unmark it as needing a tail
+ packing */
+ if ((have_large_tails(inode->i_sb)
+ && inode->i_size > i_block_size(inode) * 4)
+ || (have_small_tails(inode->i_sb)
+ && inode->i_size > i_block_size(inode)))
+ REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask;
+
+ ret = journal_begin(&myth, inode->i_sb, 1);
+ if (ret) {
+ reiserfs_write_unlock(inode->i_sb);
+ goto journal_error;
+ }
+ reiserfs_update_inode_transaction(inode);
+ inode->i_size = pos;
+ /*
+ * this will just nest into our transaction. It's important
+ * to use mark_inode_dirty so the inode gets pushed around on the
+ * dirty lists, and so that O_SYNC works as expected
+ */
+ mark_inode_dirty(inode);
+ reiserfs_update_sd(&myth, inode);
+ update_sd = 1;
+ ret = journal_end(&myth, inode->i_sb, 1);
+ reiserfs_write_unlock(inode->i_sb);
+ if (ret)
+ goto journal_error;
+ }
+ if (th) {
+ reiserfs_write_lock(inode->i_sb);
+ if (!update_sd)
+ mark_inode_dirty(inode);
+ ret = reiserfs_end_persistent_transaction(th);
+ reiserfs_write_unlock(inode->i_sb);
+ if (ret)
+ goto out;
+ }
+
+ out:
+ unlock_page(page);
+ page_cache_release(page);
+ return ret == 0 ? copied : ret;
+
+ journal_error:
+ if (th) {
+ reiserfs_write_lock(inode->i_sb);
+ if (!update_sd)
+ reiserfs_update_sd(th, inode);
+ ret = reiserfs_end_persistent_transaction(th);
+ reiserfs_write_unlock(inode->i_sb);
+ }
+
+ goto out;
+}
+
+int reiserfs_commit_write(struct file *f, struct page *page,
+ unsigned from, unsigned to)
{
struct inode *inode = page->mapping->host;
loff_t pos = ((loff_t) page->index << PAGE_CACHE_SHIFT) + to;
int ret = 1;
struct reiserfs_journal *j = SB_JOURNAL(inode->i_sb);
+ lock_buffer(bh);
spin_lock(&j->j_dirty_buffers_lock);
if (!buffer_mapped(bh)) {
goto free_jh;
if (buffer_journaled(bh) || buffer_journal_dirty(bh)) {
ret = 0;
}
- } else if (buffer_dirty(bh) || buffer_locked(bh)) {
+ } else if (buffer_dirty(bh)) {
struct reiserfs_journal_list *jl;
struct reiserfs_jh *jh = bh->b_private;
reiserfs_free_jh(bh);
}
spin_unlock(&j->j_dirty_buffers_lock);
+ unlock_buffer(bh);
return ret;
}
/* clm -- taken from fs/buffer.c:block_invalidate_page */
-static int reiserfs_invalidatepage(struct page *page, unsigned long offset)
+static void reiserfs_invalidatepage(struct page *page, unsigned long offset)
{
struct buffer_head *head, *bh, *next;
struct inode *inode = page->mapping->host;
* The get_block cached value has been unconditionally invalidated,
* so real IO is not possible anymore.
*/
- if (!offset && ret)
+ if (!offset && ret) {
ret = try_to_release_page(page, 0);
+ /* maybe should BUG_ON(!ret); - neilb */
+ }
out:
- return ret;
+ return;
}
static int reiserfs_set_page_dirty(struct page *page)
{
struct inode *inode = dentry->d_inode;
int error;
- unsigned int ia_valid = attr->ia_valid;
+ unsigned int ia_valid;
+
+ /* must be turned off for recursive notify_change calls */
+ ia_valid = attr->ia_valid &= ~(ATTR_KILL_SUID|ATTR_KILL_SGID);
+
reiserfs_write_lock(inode->i_sb);
if (attr->ia_valid & ATTR_SIZE) {
/* version 2 items will be caught by the s_maxbytes check
}
/* fill in hole pointers in the expanding truncate case. */
if (attr->ia_size > inode->i_size) {
- error = generic_cont_expand(inode, attr->ia_size);
+ error = generic_cont_expand_simple(inode, attr->ia_size);
if (REISERFS_I(inode)->i_prealloc_count > 0) {
int err;
struct reiserfs_transaction_handle th;
}
if (error)
goto out;
+ /*
+ * file size is changed, ctime and mtime are
+ * to be updated
+ */
+ attr->ia_valid |= (ATTR_MTIME | ATTR_CTIME);
}
}
if (error)
goto out;
error =
- DQUOT_TRANSFER(inode, attr) ? -EDQUOT : 0;
+ vfs_dq_transfer(inode, attr) ? -EDQUOT : 0;
if (error) {
journal_end(&th, inode->i_sb,
jbegin_count);
return error;
}
-struct address_space_operations reiserfs_address_space_operations = {
+const struct address_space_operations reiserfs_address_space_operations = {
.writepage = reiserfs_writepage,
.readpage = reiserfs_readpage,
.readpages = reiserfs_readpages,
.releasepage = reiserfs_releasepage,
.invalidatepage = reiserfs_invalidatepage,
.sync_page = block_sync_page,
- .prepare_write = reiserfs_prepare_write,
- .commit_write = reiserfs_commit_write,
+ .write_begin = reiserfs_write_begin,
+ .write_end = reiserfs_write_end,
.bmap = reiserfs_aop_bmap,
.direct_IO = reiserfs_direct_IO,
.set_page_dirty = reiserfs_set_page_dirty,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff