aboutsummaryrefslogtreecommitdiff
path: root/fs/ocfs2/dir.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ocfs2/dir.c')
-rw-r--r--fs/ocfs2/dir.c399
1 files changed, 314 insertions, 85 deletions
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 026e6eb8518..f2c4098cf33 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -40,6 +40,7 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/highmem.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_NAMEI
#include <cluster/masklog.h>
@@ -47,6 +48,7 @@
#include "ocfs2.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dir.h"
#include "dlmglue.h"
#include "extent_map.h"
@@ -82,47 +84,72 @@ static int ocfs2_do_extend_dir(struct super_block *sb,
struct ocfs2_alloc_context *meta_ac,
struct buffer_head **new_bh);
-static struct buffer_head *ocfs2_bread(struct inode *inode,
- int block, int *err, int reada)
+/*
+ * These are distinct checks because future versions of the file system will
+ * want to have a trailing dirent structure independent of indexing.
+ */
+static int ocfs2_dir_has_trailer(struct inode *dir)
{
- struct buffer_head *bh = NULL;
- int tmperr;
- u64 p_blkno;
- int readflags = 0;
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ return 0;
- if (reada)
- readflags |= OCFS2_BH_READAHEAD;
+ return ocfs2_meta_ecc(OCFS2_SB(dir->i_sb));
+}
- if (((u64)block << inode->i_sb->s_blocksize_bits) >=
- i_size_read(inode)) {
- BUG_ON(!reada);
- return NULL;
- }
+static int ocfs2_supports_dir_trailer(struct ocfs2_super *osb)
+{
+ return ocfs2_meta_ecc(osb);
+}
- down_read(&OCFS2_I(inode)->ip_alloc_sem);
- tmperr = ocfs2_extent_map_get_blocks(inode, block, &p_blkno, NULL,
- NULL);
- up_read(&OCFS2_I(inode)->ip_alloc_sem);
- if (tmperr < 0) {
- mlog_errno(tmperr);
- goto fail;
- }
+static inline unsigned int ocfs2_dir_trailer_blk_off(struct super_block *sb)
+{
+ return sb->s_blocksize - sizeof(struct ocfs2_dir_block_trailer);
+}
- tmperr = ocfs2_read_blocks(inode, p_blkno, 1, &bh, readflags);
- if (tmperr < 0)
- goto fail;
+#define ocfs2_trailer_from_bh(_bh, _sb) ((struct ocfs2_dir_block_trailer *) ((_bh)->b_data + ocfs2_dir_trailer_blk_off((_sb))))
- tmperr = 0;
+/* XXX ocfs2_block_dqtrailer() is similar but not quite - can we make
+ * them more consistent? */
+struct ocfs2_dir_block_trailer *ocfs2_dir_trailer_from_size(int blocksize,
+ void *data)
+{
+ char *p = data;
- *err = 0;
- return bh;
+ p += blocksize - sizeof(struct ocfs2_dir_block_trailer);
+ return (struct ocfs2_dir_block_trailer *)p;
+}
-fail:
- brelse(bh);
- bh = NULL;
+/*
+ * XXX: This is executed once on every dirent. We should consider optimizing
+ * it.
+ */
+static int ocfs2_skip_dir_trailer(struct inode *dir,
+ struct ocfs2_dir_entry *de,
+ unsigned long offset,
+ unsigned long blklen)
+{
+ unsigned long toff = blklen - sizeof(struct ocfs2_dir_block_trailer);
- *err = -EIO;
- return NULL;
+ if (!ocfs2_dir_has_trailer(dir))
+ return 0;
+
+ if (offset != toff)
+ return 0;
+
+ return 1;
+}
+
+static void ocfs2_init_dir_trailer(struct inode *inode,
+ struct buffer_head *bh)
+{
+ struct ocfs2_dir_block_trailer *trailer;
+
+ trailer = ocfs2_trailer_from_bh(bh, inode->i_sb);
+ strcpy(trailer->db_signature, OCFS2_DIR_TRAILER_SIGNATURE);
+ trailer->db_compat_rec_len =
+ cpu_to_le16(sizeof(struct ocfs2_dir_block_trailer));
+ trailer->db_parent_dinode = cpu_to_le64(OCFS2_I(inode)->ip_blkno);
+ trailer->db_blkno = cpu_to_le64(bh->b_blocknr);
}
/*
@@ -231,7 +258,7 @@ static struct buffer_head *ocfs2_find_entry_id(const char *name,
struct ocfs2_dinode *di;
struct ocfs2_inline_data *data;
- ret = ocfs2_read_block(dir, OCFS2_I(dir)->ip_blkno, &di_bh);
+ ret = ocfs2_read_inode_block(dir, &di_bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -250,6 +277,108 @@ out:
return NULL;
}
+static int ocfs2_validate_dir_block(struct super_block *sb,
+ struct buffer_head *bh)
+{
+ int rc;
+ struct ocfs2_dir_block_trailer *trailer =
+ ocfs2_trailer_from_bh(bh, sb);
+
+
+ /*
+ * We don't validate dirents here, that's handled
+ * in-place when the code walks them.
+ */
+ mlog(0, "Validating dirblock %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ BUG_ON(!buffer_uptodate(bh));
+
+ /*
+ * If the ecc fails, we return the error but otherwise
+ * leave the filesystem running. We know any error is
+ * local to this block.
+ *
+ * Note that we are safe to call this even if the directory
+ * doesn't have a trailer. Filesystems without metaecc will do
+ * nothing, and filesystems with it will have one.
+ */
+ rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &trailer->db_check);
+ if (rc)
+ mlog(ML_ERROR, "Checksum failed for dinode %llu\n",
+ (unsigned long long)bh->b_blocknr);
+
+ return rc;
+}
+
+/*
+ * This function forces all errors to -EIO for consistency with its
+ * predecessor, ocfs2_bread(). We haven't audited what returning the
+ * real error codes would do to callers. We log the real codes with
+ * mlog_errno() before we squash them.
+ */
+static int ocfs2_read_dir_block(struct inode *inode, u64 v_block,
+ struct buffer_head **bh, int flags)
+{
+ int rc = 0;
+ struct buffer_head *tmp = *bh;
+ struct ocfs2_dir_block_trailer *trailer;
+
+ rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, flags,
+ ocfs2_validate_dir_block);
+ if (rc) {
+ mlog_errno(rc);
+ goto out;
+ }
+
+ /*
+ * We check the trailer here rather than in
+ * ocfs2_validate_dir_block() because that function doesn't have
+ * the inode to test.
+ */
+ if (!(flags & OCFS2_BH_READAHEAD) &&
+ ocfs2_dir_has_trailer(inode)) {
+ trailer = ocfs2_trailer_from_bh(tmp, inode->i_sb);
+ if (!OCFS2_IS_VALID_DIR_TRAILER(trailer)) {
+ rc = -EINVAL;
+ ocfs2_error(inode->i_sb,
+ "Invalid dirblock #%llu: "
+ "signature = %.*s\n",
+ (unsigned long long)tmp->b_blocknr, 7,
+ trailer->db_signature);
+ goto out;
+ }
+ if (le64_to_cpu(trailer->db_blkno) != tmp->b_blocknr) {
+ rc = -EINVAL;
+ ocfs2_error(inode->i_sb,
+ "Directory block #%llu has an invalid "
+ "db_blkno of %llu",
+ (unsigned long long)tmp->b_blocknr,
+ (unsigned long long)le64_to_cpu(trailer->db_blkno));
+ goto out;
+ }
+ if (le64_to_cpu(trailer->db_parent_dinode) !=
+ OCFS2_I(inode)->ip_blkno) {
+ rc = -EINVAL;
+ ocfs2_error(inode->i_sb,
+ "Directory block #%llu on dinode "
+ "#%llu has an invalid parent_dinode "
+ "of %llu",
+ (unsigned long long)tmp->b_blocknr,
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ (unsigned long long)le64_to_cpu(trailer->db_blkno));
+ goto out;
+ }
+ }
+
+ /* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */
+ if (!*bh)
+ *bh = tmp;
+
+out:
+ return rc ? -EIO : 0;
+}
+
static struct buffer_head *ocfs2_find_entry_el(const char *name, int namelen,
struct inode *dir,
struct ocfs2_dir_entry **res_dir)
@@ -296,15 +425,17 @@ restart:
}
num++;
- bh = ocfs2_bread(dir, b++, &err, 1);
+ bh = NULL;
+ err = ocfs2_read_dir_block(dir, b++, &bh,
+ OCFS2_BH_READAHEAD);
bh_use[ra_max] = bh;
}
}
if ((bh = bh_use[ra_ptr++]) == NULL)
goto next;
- if (ocfs2_read_block(dir, block, &bh)) {
+ if (ocfs2_read_dir_block(dir, block, &bh, 0)) {
/* read error, skip block & hope for the best.
- * ocfs2_read_block() has released the bh. */
+ * ocfs2_read_dir_block() has released the bh. */
ocfs2_error(dir->i_sb, "reading directory %llu, "
"offset %lu\n",
(unsigned long long)OCFS2_I(dir)->ip_blkno,
@@ -381,14 +512,18 @@ int ocfs2_update_entry(struct inode *dir, handle_t *handle,
struct inode *new_entry_inode)
{
int ret;
+ ocfs2_journal_access_func access = ocfs2_journal_access_db;
/*
* The same code works fine for both inline-data and extent
- * based directories, so no need to split this up.
+ * based directories, so no need to split this up. The only
+ * difference is the journal_access function.
*/
- ret = ocfs2_journal_access(handle, dir, de_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ access = ocfs2_journal_access_di;
+
+ ret = access(handle, dir, de_bh, OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -410,9 +545,13 @@ static int __ocfs2_delete_entry(handle_t *handle, struct inode *dir,
{
struct ocfs2_dir_entry *de, *pde;
int i, status = -ENOENT;
+ ocfs2_journal_access_func access = ocfs2_journal_access_db;
mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p)\n", handle, dir, de_del, bh);
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ access = ocfs2_journal_access_di;
+
i = 0;
pde = NULL;
de = (struct ocfs2_dir_entry *) first_de;
@@ -423,8 +562,8 @@ static int __ocfs2_delete_entry(handle_t *handle, struct inode *dir,
goto bail;
}
if (de == de_del) {
- status = ocfs2_journal_access(handle, dir, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = access(handle, dir, bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
status = -EIO;
mlog_errno(status);
@@ -458,7 +597,7 @@ static inline int ocfs2_delete_entry_id(handle_t *handle,
struct ocfs2_dinode *di;
struct ocfs2_inline_data *data;
- ret = ocfs2_read_block(dir, OCFS2_I(dir)->ip_blkno, &di_bh);
+ ret = ocfs2_read_inode_block(dir, &di_bh);
if (ret) {
mlog_errno(ret);
goto out;
@@ -576,6 +715,16 @@ int __ocfs2_add_entry(handle_t *handle,
goto bail;
}
+ /* We're guaranteed that we should have space, so we
+ * can't possibly have hit the trailer...right? */
+ mlog_bug_on_msg(ocfs2_skip_dir_trailer(dir, de, offset, size),
+ "Hit dir trailer trying to insert %.*s "
+ "(namelen %d) into directory %llu. "
+ "offset is %lu, trailer offset is %d\n",
+ namelen, name, namelen,
+ (unsigned long long)parent_fe_bh->b_blocknr,
+ offset, ocfs2_dir_trailer_blk_off(dir->i_sb));
+
if (ocfs2_dirent_would_fit(de, rec_len)) {
dir->i_mtime = dir->i_ctime = CURRENT_TIME;
retval = ocfs2_mark_inode_dirty(handle, dir, parent_fe_bh);
@@ -584,8 +733,14 @@ int __ocfs2_add_entry(handle_t *handle,
goto bail;
}
- status = ocfs2_journal_access(handle, dir, insert_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ if (insert_bh == parent_fe_bh)
+ status = ocfs2_journal_access_di(handle, dir,
+ insert_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ else
+ status = ocfs2_journal_access_db(handle, dir,
+ insert_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
/* By now the buffer is marked for journaling */
offset += le16_to_cpu(de->rec_len);
if (le64_to_cpu(de->inode)) {
@@ -611,6 +766,7 @@ int __ocfs2_add_entry(handle_t *handle,
retval = 0;
goto bail;
}
+
offset += le16_to_cpu(de->rec_len);
de = (struct ocfs2_dir_entry *) ((char *) de + le16_to_cpu(de->rec_len));
}
@@ -636,7 +792,7 @@ static int ocfs2_dir_foreach_blk_id(struct inode *inode,
struct ocfs2_inline_data *data;
struct ocfs2_dir_entry *de;
- ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &di_bh);
+ ret = ocfs2_read_inode_block(inode, &di_bh);
if (ret) {
mlog(ML_ERROR, "Unable to read inode block for dir %llu\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
@@ -724,7 +880,6 @@ static int ocfs2_dir_foreach_blk_el(struct inode *inode,
int i, stored;
struct buffer_head * bh, * tmp;
struct ocfs2_dir_entry * de;
- int err;
struct super_block * sb = inode->i_sb;
unsigned int ra_sectors = 16;
@@ -735,12 +890,8 @@ static int ocfs2_dir_foreach_blk_el(struct inode *inode,
while (!error && !stored && *f_pos < i_size_read(inode)) {
blk = (*f_pos) >> sb->s_blocksize_bits;
- bh = ocfs2_bread(inode, blk, &err, 0);
- if (!bh) {
- mlog(ML_ERROR,
- "directory #%llu contains a hole at offset %lld\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno,
- *f_pos);
+ if (ocfs2_read_dir_block(inode, blk, &bh, 0)) {
+ /* Skip the corrupt dirblock and keep trying */
*f_pos += sb->s_blocksize - offset;
continue;
}
@@ -754,8 +905,10 @@ static int ocfs2_dir_foreach_blk_el(struct inode *inode,
|| (((last_ra_blk - blk) << 9) <= (ra_sectors / 2))) {
for (i = ra_sectors >> (sb->s_blocksize_bits - 9);
i > 0; i--) {
- tmp = ocfs2_bread(inode, ++blk, &err, 1);
- brelse(tmp);
+ tmp = NULL;
+ if (!ocfs2_read_dir_block(inode, ++blk, &tmp,
+ OCFS2_BH_READAHEAD))
+ brelse(tmp);
}
last_ra_blk = blk;
ra_sectors = 8;
@@ -828,6 +981,7 @@ revalidate:
}
offset = 0;
brelse(bh);
+ bh = NULL;
}
stored = 0;
@@ -1050,9 +1204,15 @@ int ocfs2_empty_dir(struct inode *inode)
return !priv.seen_other;
}
-static void ocfs2_fill_initial_dirents(struct inode *inode,
- struct inode *parent,
- char *start, unsigned int size)
+/*
+ * Fills "." and ".." dirents in a new directory block. Returns dirent for
+ * "..", which might be used during creation of a directory with a trailing
+ * header. It is otherwise safe to ignore the return code.
+ */
+static struct ocfs2_dir_entry *ocfs2_fill_initial_dirents(struct inode *inode,
+ struct inode *parent,
+ char *start,
+ unsigned int size)
{
struct ocfs2_dir_entry *de = (struct ocfs2_dir_entry *)start;
@@ -1069,6 +1229,8 @@ static void ocfs2_fill_initial_dirents(struct inode *inode,
de->name_len = 2;
strcpy(de->name, "..");
ocfs2_set_de_type(de, S_IFDIR);
+
+ return de;
}
/*
@@ -1086,8 +1248,8 @@ static int ocfs2_fill_new_dir_id(struct ocfs2_super *osb,
struct ocfs2_inline_data *data = &di->id2.i_data;
unsigned int size = le16_to_cpu(data->id_count);
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -1121,10 +1283,15 @@ static int ocfs2_fill_new_dir_el(struct ocfs2_super *osb,
struct ocfs2_alloc_context *data_ac)
{
int status;
+ unsigned int size = osb->sb->s_blocksize;
struct buffer_head *new_bh = NULL;
+ struct ocfs2_dir_entry *de;
mlog_entry_void();
+ if (ocfs2_supports_dir_trailer(osb))
+ size = ocfs2_dir_trailer_blk_off(parent->i_sb);
+
status = ocfs2_do_extend_dir(osb->sb, handle, inode, fe_bh,
data_ac, NULL, &new_bh);
if (status < 0) {
@@ -1134,16 +1301,17 @@ static int ocfs2_fill_new_dir_el(struct ocfs2_super *osb,
ocfs2_set_new_buffer_uptodate(inode, new_bh);
- status = ocfs2_journal_access(handle, inode, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_db(handle, inode, new_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
}
memset(new_bh->b_data, 0, osb->sb->s_blocksize);
- ocfs2_fill_initial_dirents(inode, parent, new_bh->b_data,
- osb->sb->s_blocksize);
+ de = ocfs2_fill_initial_dirents(inode, parent, new_bh->b_data, size);
+ if (ocfs2_supports_dir_trailer(osb))
+ ocfs2_init_dir_trailer(inode, new_bh);
status = ocfs2_journal_dirty(handle, new_bh);
if (status < 0) {
@@ -1184,13 +1352,27 @@ int ocfs2_fill_new_dir(struct ocfs2_super *osb,
data_ac);
}
+/*
+ * Expand rec_len of the rightmost dirent in a directory block so that it
+ * contains the end of our valid space for dirents. We do this during
+ * expansion from an inline directory to one with extents. The first dir block
+ * in that case is taken from the inline data portion of the inode block.
+ *
+ * We add the dir trailer if this filesystem wants it.
+ */
static void ocfs2_expand_last_dirent(char *start, unsigned int old_size,
- unsigned int new_size)
+ struct super_block *sb)
{
struct ocfs2_dir_entry *de;
struct ocfs2_dir_entry *prev_de;
char *de_buf, *limit;
- unsigned int bytes = new_size - old_size;
+ unsigned int new_size = sb->s_blocksize;
+ unsigned int bytes;
+
+ if (ocfs2_supports_dir_trailer(OCFS2_SB(sb)))
+ new_size = ocfs2_dir_trailer_blk_off(sb);
+
+ bytes = new_size - old_size;
limit = start + old_size;
de_buf = start;
@@ -1216,9 +1398,9 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
unsigned int blocks_wanted,
struct buffer_head **first_block_bh)
{
- int ret, credits = OCFS2_INLINE_TO_EXTENTS_CREDITS;
u32 alloc, bit_off, len;
struct super_block *sb = dir->i_sb;
+ int ret, credits = ocfs2_inline_to_extents_credits(sb);
u64 blkno, bytes = blocks_wanted << sb->s_blocksize_bits;
struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
struct ocfs2_inode_info *oi = OCFS2_I(dir);
@@ -1227,6 +1409,7 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
handle_t *handle;
struct ocfs2_extent_tree et;
+ int did_quota = 0;
ocfs2_init_dinode_extent_tree(&et, dir, di_bh);
@@ -1264,6 +1447,12 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
goto out_sem;
}
+ if (vfs_dq_alloc_space_nodirty(dir,
+ ocfs2_clusters_to_bytes(osb->sb, alloc))) {
+ ret = -EDQUOT;
+ goto out_commit;
+ }
+ did_quota = 1;
/*
* Try to claim as many clusters as the bitmap can give though
* if we only get one now, that's enough to continue. The rest
@@ -1290,8 +1479,8 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
ocfs2_set_new_buffer_uptodate(dir, dirdata_bh);
- ret = ocfs2_journal_access(handle, dir, dirdata_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ ret = ocfs2_journal_access_db(handle, dir, dirdata_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -1300,8 +1489,9 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
memcpy(dirdata_bh->b_data, di->id2.i_data.id_data, i_size_read(dir));
memset(dirdata_bh->b_data + i_size_read(dir), 0,
sb->s_blocksize - i_size_read(dir));
- ocfs2_expand_last_dirent(dirdata_bh->b_data, i_size_read(dir),
- sb->s_blocksize);
+ ocfs2_expand_last_dirent(dirdata_bh->b_data, i_size_read(dir), sb);
+ if (ocfs2_supports_dir_trailer(osb))
+ ocfs2_init_dir_trailer(dir, dirdata_bh);
ret = ocfs2_journal_dirty(handle, dirdata_bh);
if (ret) {
@@ -1317,8 +1507,8 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
* We let the later dirent insert modify c/mtime - to the user
* the data hasn't changed.
*/
- ret = ocfs2_journal_access(handle, dir, di_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ ret = ocfs2_journal_access_di(handle, dir, di_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -1386,6 +1576,9 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
dirdata_bh = NULL;
out_commit:
+ if (ret < 0 && did_quota)
+ vfs_dq_free_space_nodirty(dir,
+ ocfs2_clusters_to_bytes(osb->sb, 2));
ocfs2_commit_trans(osb, handle);
out_sem:
@@ -1410,7 +1603,7 @@ static int ocfs2_do_extend_dir(struct super_block *sb,
struct buffer_head **new_bh)
{
int status;
- int extend;
+ int extend, did_quota = 0;
u64 p_blkno, v_blkno;
spin_lock(&OCFS2_I(dir)->ip_lock);
@@ -1420,6 +1613,13 @@ static int ocfs2_do_extend_dir(struct super_block *sb,
if (extend) {
u32 offset = OCFS2_I(dir)->ip_clusters;
+ if (vfs_dq_alloc_space_nodirty(dir,
+ ocfs2_clusters_to_bytes(sb, 1))) {
+ status = -EDQUOT;
+ goto bail;
+ }
+ did_quota = 1;
+
status = ocfs2_add_inode_data(OCFS2_SB(sb), dir, &offset,
1, 0, parent_fe_bh, handle,
data_ac, meta_ac, NULL);
@@ -1445,6 +1645,8 @@ static int ocfs2_do_extend_dir(struct super_block *sb,
}
status = 0;
bail:
+ if (did_quota && status < 0)
+ vfs_dq_free_space_nodirty(dir, ocfs2_clusters_to_bytes(sb, 1));
mlog_exit(status);
return status;
}
@@ -1569,16 +1771,22 @@ do_extend:
ocfs2_set_new_buffer_uptodate(dir, new_bh);
- status = ocfs2_journal_access(handle, dir, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_db(handle, dir, new_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
}
memset(new_bh->b_data, 0, sb->s_blocksize);
+
de = (struct ocfs2_dir_entry *) new_bh->b_data;
de->inode = 0;
- de->rec_len = cpu_to_le16(sb->s_blocksize);
+ if (ocfs2_dir_has_trailer(dir)) {
+ de->rec_len = cpu_to_le16(ocfs2_dir_trailer_blk_off(sb));
+ ocfs2_init_dir_trailer(dir, new_bh);
+ } else {
+ de->rec_len = cpu_to_le16(sb->s_blocksize);
+ }
status = ocfs2_journal_dirty(handle, new_bh);
if (status < 0) {
mlog_errno(status);
@@ -1620,11 +1828,21 @@ static int ocfs2_find_dir_space_id(struct inode *dir, struct buffer_head *di_bh,
unsigned int *blocks_wanted)
{
int ret;
+ struct super_block *sb = dir->i_sb;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
struct ocfs2_dir_entry *de, *last_de = NULL;
char *de_buf, *limit;
unsigned long offset = 0;
- unsigned int rec_len, new_rec_len;
+ unsigned int rec_len, new_rec_len, free_space = dir->i_sb->s_blocksize;
+
+ /*
+ * This calculates how many free bytes we'd have in block zero, should
+ * this function force expansion to an extent tree.
+ */
+ if (ocfs2_supports_dir_trailer(OCFS2_SB(sb)))
+ free_space = ocfs2_dir_trailer_blk_off(sb) - i_size_read(dir);
+ else
+ free_space = dir->i_sb->s_blocksize - i_size_read(dir);
de_buf = di->id2.i_data.id_data;
limit = de_buf + i_size_read(dir);
@@ -1641,6 +1859,11 @@ static int ocfs2_find_dir_space_id(struct inode *dir, struct buffer_head *di_bh,
ret = -EEXIST;
goto out;
}
+ /*
+ * No need to check for a trailing dirent record here as
+ * they're not used for inline dirs.
+ */
+
if (ocfs2_dirent_would_fit(de, rec_len)) {
/* Ok, we found a spot. Return this bh and let
* the caller actually fill it in. */
@@ -1661,7 +1884,7 @@ static int ocfs2_find_dir_space_id(struct inode *dir, struct buffer_head *di_bh,
* dirent can be found.
*/
*blocks_wanted = 1;
- new_rec_len = le16_to_cpu(last_de->rec_len) + (dir->i_sb->s_blocksize - i_size_read(dir));
+ new_rec_len = le16_to_cpu(last_de->rec_len) + free_space;
if (new_rec_len < (rec_len + OCFS2_DIR_REC_LEN(last_de->name_len)))
*blocks_wanted = 2;
@@ -1679,9 +1902,10 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
struct ocfs2_dir_entry *de;
struct super_block *sb = dir->i_sb;
int status;
+ int blocksize = dir->i_sb->s_blocksize;
- bh = ocfs2_bread(dir, 0, &status, 0);
- if (!bh) {
+ status = ocfs2_read_dir_block(dir, 0, &bh, 0);
+ if (status) {
mlog_errno(status);
goto bail;
}
@@ -1702,11 +1926,10 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
status = -ENOSPC;
goto bail;
}
- bh = ocfs2_bread(dir,
- offset >> sb->s_blocksize_bits,
- &status,
- 0);
- if (!bh) {
+ status = ocfs2_read_dir_block(dir,
+ offset >> sb->s_blocksize_bits,
+ &bh, 0);
+ if (status) {
mlog_errno(status);
goto bail;
}
@@ -1721,6 +1944,11 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
status = -EEXIST;
goto bail;
}
+
+ if (ocfs2_skip_dir_trailer(dir, de, offset % blocksize,
+ blocksize))
+ goto next;
+
if (ocfs2_dirent_would_fit(de, rec_len)) {
/* Ok, we found a spot. Return this bh and let
* the caller actually fill it in. */
@@ -1729,6 +1957,7 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
status = 0;
goto bail;
}
+next:
offset += le16_to_cpu(de->rec_len);
de = (struct ocfs2_dir_entry *)((char *) de + le16_to_cpu(de->rec_len));
}