#include "xattr.h"
#include "acl.h"
+static int ext3_writepage_trans_blocks(struct inode *inode);
+
/*
* Test whether an inode is a fast symlink.
*/
(!is_metadata && !ext3_should_journal_data(inode))) {
if (bh) {
BUFFER_TRACE(bh, "call journal_forget");
- ext3_journal_forget(handle, bh);
+ return ext3_journal_forget(handle, bh);
}
return 0;
}
return ext3_journal_restart(handle, blocks_for_truncate(inode));
}
-/*
- * Called at each iput()
- *
- * The inode may be "bad" if ext3_read_inode() saw an error from
- * ext3_get_inode(), so we need to check that to avoid freeing random disk
- * blocks.
- */
-void ext3_put_inode(struct inode *inode)
-{
- if (!is_bad_inode(inode))
- ext3_discard_prealloc(inode);
-}
-
static void ext3_truncate_nocheck (struct inode *inode);
/*
clear_inode(inode); /* We must guarantee clearing of inode... */
}
-void ext3_discard_prealloc (struct inode * inode)
-{
-#ifdef EXT3_PREALLOCATE
- struct ext3_inode_info *ei = EXT3_I(inode);
- /* Writer: ->i_prealloc* */
- if (ei->i_prealloc_count) {
- unsigned short total = ei->i_prealloc_count;
- unsigned long block = ei->i_prealloc_block;
- ei->i_prealloc_count = 0;
- ei->i_prealloc_block = 0;
- /* Writer: end */
- ext3_free_blocks (inode, block, total);
- }
-#endif
-}
-
static int ext3_alloc_block (handle_t *handle,
struct inode * inode, unsigned long goal, int *err)
{
unsigned long result;
-#ifdef EXT3_PREALLOCATE
-#ifdef EXT3FS_DEBUG
- static unsigned long alloc_hits, alloc_attempts;
-#endif
- struct ext3_inode_info *ei = EXT3_I(inode);
- /* Writer: ->i_prealloc* */
- if (ei->i_prealloc_count &&
- (goal == ei->i_prealloc_block ||
- goal + 1 == ei->i_prealloc_block))
- {
- result = ei->i_prealloc_block++;
- ei->i_prealloc_count--;
- /* Writer: end */
- ext3_debug ("preallocation hit (%lu/%lu).\n",
- ++alloc_hits, ++alloc_attempts);
- } else {
- ext3_discard_prealloc (inode);
- ext3_debug ("preallocation miss (%lu/%lu).\n",
- alloc_hits, ++alloc_attempts);
- if (S_ISREG(inode->i_mode))
- result = ext3_new_block (inode, goal,
- &ei->i_prealloc_count,
- &ei->i_prealloc_block, err);
- else
- result = ext3_new_block(inode, goal, NULL, NULL, err);
- /*
- * AKPM: this is somewhat sticky. I'm not surprised it was
- * disabled in 2.2's ext3. Need to integrate b_committed_data
- * guarding with preallocation, if indeed preallocation is
- * effective.
- */
- }
-#else
- result = ext3_new_block(handle, inode, goal, NULL, NULL, err);
-#endif
+ result = ext3_new_block(handle, inode, goal, err);
return result;
}
{
struct ext3_inode_info *ei = EXT3_I(inode);
/* Writer: ->i_next_alloc* */
- if (block == ei->i_next_alloc_block + 1) {
+ if ((block == ei->i_next_alloc_block + 1)&& ei->i_next_alloc_goal) {
ei->i_next_alloc_block++;
ei->i_next_alloc_goal++;
}
/* We are done with atomic stuff, now do the rest of housekeeping */
- inode->i_ctime = CURRENT_TIME;
+ inode->i_ctime = CURRENT_TIME_SEC;
ext3_mark_inode_dirty(handle, inode);
/* had we spliced it onto indirect block? */
int block, int create, int *err)
{
struct buffer_head * bh;
- int prev_blocks;
- prev_blocks = inode->i_blocks;
-
- bh = ext3_getblk (handle, inode, block, create, err);
+ bh = ext3_getblk(handle, inode, block, create, err);
if (!bh)
return bh;
-#ifdef EXT3_PREALLOCATE
- /*
- * If the inode has grown, and this is a directory, then use a few
- * more of the preallocated blocks to keep directory fragmentation
- * down. The preallocated blocks are guaranteed to be contiguous.
- */
- if (create &&
- S_ISDIR(inode->i_mode) &&
- inode->i_blocks > prev_blocks &&
- EXT3_HAS_COMPAT_FEATURE(inode->i_sb,
- EXT3_FEATURE_COMPAT_DIR_PREALLOC)) {
- int i;
- struct buffer_head *tmp_bh;
-
- for (i = 1;
- EXT3_I(inode)->i_prealloc_count &&
- i < EXT3_SB(inode->i_sb)->s_es->s_prealloc_dir_blocks;
- i++) {
- /*
- * ext3_getblk will zero out the contents of the
- * directory for us
- */
- tmp_bh = ext3_getblk(handle, inode,
- block+i, create, err);
- if (!tmp_bh) {
- brelse (bh);
- return 0;
- }
- brelse (tmp_bh);
- }
- }
-#endif
if (buffer_uptodate(bh))
return bh;
- ll_rw_block (READ, 1, &bh);
- wait_on_buffer (bh);
+ ll_rw_block(READ, 1, &bh);
+ wait_on_buffer(bh);
if (buffer_uptodate(bh))
return bh;
- brelse (bh);
+ put_bh(bh);
*err = -EIO;
return NULL;
}
return ret;
}
-static int
+int
ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh)
{
int err = journal_dirty_data(handle, bh);
if (handle) {
int err;
- if (orphan)
+ if (orphan && inode->i_nlink)
ext3_orphan_del(handle, inode);
if (orphan && ret > 0) {
loff_t end = offset + ret;
if (end > inode->i_size) {
ei->i_disksize = end;
i_size_write(inode, end);
- err = ext3_mark_inode_dirty(handle, inode);
- if (!ret)
- ret = err;
+ /*
+ * We're going to return a positive `ret'
+ * here due to non-zero-length I/O, so there's
+ * no way of reporting error returns from
+ * ext3_mark_inode_dirty() to userspace. So
+ * ignore it.
+ */
+ ext3_mark_inode_dirty(handle, inode);
}
}
err = ext3_journal_stop(handle);
if (ext3_inode_is_fast_symlink(inode))
return;
- ext3_discard_prealloc(inode);
+ ext3_discard_reservation(inode);
/*
* We have to lock the EOF page here, because lock_page() nests
;
}
up(&ei->truncate_sem);
- inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
ext3_mark_inode_dirty(handle, inode);
/* In a multi-transaction truncate, we only make the final
struct buffer_head *bh;
struct ext3_group_desc * gdp;
+
if ((ino != EXT3_ROOT_INO &&
ino != EXT3_JOURNAL_INO &&
+ ino != EXT3_RESIZE_INO &&
ino < EXT3_FIRST_INO(sb)) ||
ino > le32_to_cpu(
EXT3_SB(sb)->s_es->s_inodes_count)) {
"group >= groups count");
return 0;
}
+ smp_rmb();
group_desc = block_group >> EXT3_DESC_PER_BLOCK_BITS(sb);
desc = block_group & (EXT3_DESC_PER_BLOCK(sb) - 1);
bh = EXT3_SB(sb)->s_group_desc[group_desc];
return block;
}
-/*
+/*
* ext3_get_inode_loc returns with an extra refcount against the inode's
- * underlying buffer_head on success. If `in_mem' is false then we're purely
- * trying to determine the inode's location on-disk and no read need be
- * performed.
+ * underlying buffer_head on success. If 'in_mem' is true, we have all
+ * data in memory that is needed to recreate the on-disk version of this
+ * inode.
*/
-static int ext3_get_inode_loc(struct inode *inode,
+static int __ext3_get_inode_loc(struct inode *inode,
struct ext3_iloc *iloc, int in_mem)
{
unsigned long block;
goto has_buffer;
}
- /* we can't skip I/O if inode is on a disk only */
+ /*
+ * If we have all information of the inode in memory and this
+ * is the only valid inode in the block, we need not read the
+ * block.
+ */
if (in_mem) {
struct buffer_head *bitmap_bh;
struct ext3_group_desc *desc;
int block_group;
int start;
- /*
- * If this is the only valid inode in the block we
- * need not read the block.
- */
block_group = (inode->i_ino - 1) /
EXT3_INODES_PER_GROUP(inode->i_sb);
inodes_per_buffer = bh->b_size /
make_io:
/*
- * There are another valid inodes in the buffer so we must
- * read the block from disk
+ * There are other valid inodes in the buffer, this inode
+ * has in-inode xattrs, or we don't have this inode in memory.
+ * Read the block from disk.
*/
get_bh(bh);
bh->b_end_io = end_buffer_read_sync;
return 0;
}
+int ext3_get_inode_loc(struct inode *inode, struct ext3_iloc *iloc)
+{
+ /* We have all inode data except xattrs in memory here. */
+ return __ext3_get_inode_loc(inode, iloc,
+ !(EXT3_I(inode)->i_state & EXT3_STATE_XATTR));
+}
+
void ext3_truncate(struct inode * inode)
{
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
{
unsigned int flags = EXT3_I(inode)->i_flags;
- inode->i_flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
+ inode->i_flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_IUNLINK|S_BARRIER|S_NOATIME|S_DIRSYNC);
if (flags & EXT3_SYNC_FL)
inode->i_flags |= S_SYNC;
if (flags & EXT3_APPEND_FL)
ei->i_acl = EXT3_ACL_NOT_CACHED;
ei->i_default_acl = EXT3_ACL_NOT_CACHED;
#endif
- if (ext3_get_inode_loc(inode, &iloc, 0))
+ ei->i_rsv_window.rsv_end = EXT3_RESERVE_WINDOW_NOT_ALLOCATED;
+
+ if (__ext3_get_inode_loc(inode, &iloc, 0))
goto bad_inode;
bh = iloc.bh;
raw_inode = ext3_raw_inode(&iloc);
}
ei->i_disksize = inode->i_size;
inode->i_generation = le32_to_cpu(raw_inode->i_generation);
-#ifdef EXT3_PREALLOCATE
- ei->i_prealloc_count = 0;
-#endif
ei->i_block_group = iloc.block_group;
-
+ ei->i_rsv_window.rsv_start = 0;
+ ei->i_rsv_window.rsv_end= 0;
+ atomic_set(&ei->i_rsv_window.rsv_goal_size, EXT3_DEFAULT_RESERVE_BLOCKS);
+ seqlock_init(&ei->i_rsv_window.rsv_seqlock);
/*
* NOTE! The in-memory inode i_data array is in little-endian order
* even on big-endian machines: we do NOT byteswap the block numbers!
ei->i_data[block] = raw_inode->i_block[block];
INIT_LIST_HEAD(&ei->i_orphan);
+ if (inode->i_ino >= EXT3_FIRST_INO(inode->i_sb) + 1 &&
+ EXT3_INODE_SIZE(inode->i_sb) > EXT3_GOOD_OLD_INODE_SIZE) {
+ /*
+ * When mke2fs creates big inodes it does not zero out
+ * the unused bytes above EXT3_GOOD_OLD_INODE_SIZE,
+ * so ignore those first few inodes.
+ */
+ ei->i_extra_isize = le16_to_cpu(raw_inode->i_extra_isize);
+ if (EXT3_GOOD_OLD_INODE_SIZE + ei->i_extra_isize >
+ EXT3_INODE_SIZE(inode->i_sb))
+ goto bad_inode;
+ if (ei->i_extra_isize == 0) {
+ /* The extra space is currently unused. Use it. */
+ ei->i_extra_isize = sizeof(struct ext3_inode) -
+ EXT3_GOOD_OLD_INODE_SIZE;
+ } else {
+ __le32 *magic = (void *)raw_inode +
+ EXT3_GOOD_OLD_INODE_SIZE +
+ ei->i_extra_isize;
+ if (*magic == cpu_to_le32(EXT3_XATTR_MAGIC))
+ ei->i_state |= EXT3_STATE_XATTR;
+ }
+ } else
+ ei->i_extra_isize = 0;
+
if (S_ISREG(inode->i_mode)) {
inode->i_op = &ext3_file_inode_operations;
inode->i_fop = &ext3_file_operations;
raw_inode->i_uid_high = 0;
raw_inode->i_gid_high = 0;
}
-#ifdef CONFIG_INOXID_GID32
+#ifdef CONFIG_INOXID_INTERN
raw_inode->i_raw_xid = cpu_to_le16(inode->i_xid);
#endif
raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
} else for (block = 0; block < EXT3_N_BLOCKS; block++)
raw_inode->i_block[block] = ei->i_data[block];
+ if (EXT3_INODE_SIZE(inode->i_sb) > EXT3_GOOD_OLD_INODE_SIZE)
+ raw_inode->i_extra_isize = cpu_to_le16(ei->i_extra_isize);
+
BUFFER_TRACE(bh, "call ext3_journal_dirty_metadata");
rc = ext3_journal_dirty_metadata(handle, bh);
if (!err)
* block and work out the exact number of indirects which are touched. Pah.
*/
-int ext3_writepage_trans_blocks(struct inode *inode)
+static int ext3_writepage_trans_blocks(struct inode *inode)
{
int bpp = ext3_journal_blocks_per_page(inode);
int indirects = (EXT3_NDIR_BLOCKS % bpp) ? 5 : 3;
{
int err = 0;
if (handle) {
- err = ext3_get_inode_loc(inode, iloc, 1);
+ err = ext3_get_inode_loc(inode, iloc);
if (!err) {
BUFFER_TRACE(iloc->bh, "get_write_access");
err = ext3_journal_get_write_access(handle, iloc->bh);
int err = 0;
if (handle) {
- err = ext3_get_inode_loc(inode, &iloc, 1);
+ err = ext3_get_inode_loc(inode, &iloc);
if (!err) {
BUFFER_TRACE(iloc.bh, "get_write_access");
err = journal_get_write_access(handle, iloc.bh);
git://git.onelab.eu / linux-2.6.git / blobdiff