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Diffstat (limited to 'fs/gfs2/dir.c')
-rw-r--r--fs/gfs2/dir.c171
1 files changed, 89 insertions, 82 deletions
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index 8aaeb07a07b5..0cb4c1557f20 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -93,7 +93,7 @@ int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block,
struct buffer_head *bh;
bh = gfs2_meta_new(ip->i_gl, block);
- gfs2_trans_add_bh(ip->i_gl, bh, 1);
+ gfs2_trans_add_meta(ip->i_gl, bh);
gfs2_metatype_set(bh, GFS2_METATYPE_JD, GFS2_FORMAT_JD);
gfs2_buffer_clear_tail(bh, sizeof(struct gfs2_meta_header));
*bhp = bh;
@@ -127,7 +127,7 @@ static int gfs2_dir_write_stuffed(struct gfs2_inode *ip, const char *buf,
if (error)
return error;
- gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+ gfs2_trans_add_meta(ip->i_gl, dibh);
memcpy(dibh->b_data + offset + sizeof(struct gfs2_dinode), buf, size);
if (ip->i_inode.i_size < offset + size)
i_size_write(&ip->i_inode, offset + size);
@@ -209,7 +209,7 @@ static int gfs2_dir_write_data(struct gfs2_inode *ip, const char *buf,
if (error)
goto fail;
- gfs2_trans_add_bh(ip->i_gl, bh, 1);
+ gfs2_trans_add_meta(ip->i_gl, bh);
memcpy(bh->b_data + o, buf, amount);
brelse(bh);
@@ -231,7 +231,7 @@ out:
i_size_write(&ip->i_inode, offset + copied);
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
- gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+ gfs2_trans_add_meta(ip->i_gl, dibh);
gfs2_dinode_out(ip, dibh->b_data);
brelse(dibh);
@@ -354,22 +354,31 @@ static __be64 *gfs2_dir_get_hash_table(struct gfs2_inode *ip)
return ERR_PTR(-EIO);
}
- hc = kmalloc(hsize, GFP_NOFS);
- ret = -ENOMEM;
+ hc = kmalloc(hsize, GFP_NOFS | __GFP_NOWARN);
+ if (hc == NULL)
+ hc = __vmalloc(hsize, GFP_NOFS, PAGE_KERNEL);
+
if (hc == NULL)
return ERR_PTR(-ENOMEM);
ret = gfs2_dir_read_data(ip, hc, hsize);
if (ret < 0) {
- kfree(hc);
+ if (is_vmalloc_addr(hc))
+ vfree(hc);
+ else
+ kfree(hc);
return ERR_PTR(ret);
}
spin_lock(&inode->i_lock);
- if (ip->i_hash_cache)
- kfree(hc);
- else
+ if (ip->i_hash_cache) {
+ if (is_vmalloc_addr(hc))
+ vfree(hc);
+ else
+ kfree(hc);
+ } else {
ip->i_hash_cache = hc;
+ }
spin_unlock(&inode->i_lock);
return ip->i_hash_cache;
@@ -385,7 +394,10 @@ void gfs2_dir_hash_inval(struct gfs2_inode *ip)
{
__be64 *hc = ip->i_hash_cache;
ip->i_hash_cache = NULL;
- kfree(hc);
+ if (is_vmalloc_addr(hc))
+ vfree(hc);
+ else
+ kfree(hc);
}
static inline int gfs2_dirent_sentinel(const struct gfs2_dirent *dent)
@@ -647,7 +659,7 @@ static void dirent_del(struct gfs2_inode *dip, struct buffer_head *bh,
return;
}
- gfs2_trans_add_bh(dip->i_gl, bh, 1);
+ gfs2_trans_add_meta(dip->i_gl, bh);
/* If there is no prev entry, this is the first entry in the block.
The de_rec_len is already as big as it needs to be. Just zero
@@ -690,7 +702,7 @@ static struct gfs2_dirent *gfs2_init_dirent(struct inode *inode,
offset = GFS2_DIRENT_SIZE(be16_to_cpu(dent->de_name_len));
totlen = be16_to_cpu(dent->de_rec_len);
BUG_ON(offset + name->len > totlen);
- gfs2_trans_add_bh(ip->i_gl, bh, 1);
+ gfs2_trans_add_meta(ip->i_gl, bh);
ndent = (struct gfs2_dirent *)((char *)dent + offset);
dent->de_rec_len = cpu_to_be16(offset);
gfs2_qstr2dirent(name, totlen - offset, ndent);
@@ -831,7 +843,7 @@ static struct gfs2_leaf *new_leaf(struct inode *inode, struct buffer_head **pbh,
return NULL;
gfs2_trans_add_unrevoke(GFS2_SB(inode), bn, 1);
- gfs2_trans_add_bh(ip->i_gl, bh, 1);
+ gfs2_trans_add_meta(ip->i_gl, bh);
gfs2_metatype_set(bh, GFS2_METATYPE_LF, GFS2_FORMAT_LF);
leaf = (struct gfs2_leaf *)bh->b_data;
leaf->lf_depth = cpu_to_be16(depth);
@@ -916,7 +928,7 @@ static int dir_make_exhash(struct inode *inode)
/* We're done with the new leaf block, now setup the new
hash table. */
- gfs2_trans_add_bh(dip->i_gl, dibh, 1);
+ gfs2_trans_add_meta(dip->i_gl, dibh);
gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
lp = (__be64 *)(dibh->b_data + sizeof(struct gfs2_dinode));
@@ -976,7 +988,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
return 1; /* can't split */
}
- gfs2_trans_add_bh(dip->i_gl, obh, 1);
+ gfs2_trans_add_meta(dip->i_gl, obh);
nleaf = new_leaf(inode, &nbh, be16_to_cpu(oleaf->lf_depth) + 1);
if (!nleaf) {
@@ -1069,7 +1081,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
error = gfs2_meta_inode_buffer(dip, &dibh);
if (!gfs2_assert_withdraw(GFS2_SB(&dip->i_inode), !error)) {
- gfs2_trans_add_bh(dip->i_gl, dibh, 1);
+ gfs2_trans_add_meta(dip->i_gl, dibh);
gfs2_add_inode_blocks(&dip->i_inode, 1);
gfs2_dinode_out(dip, dibh->b_data);
brelse(dibh);
@@ -1113,10 +1125,14 @@ static int dir_double_exhash(struct gfs2_inode *dip)
if (IS_ERR(hc))
return PTR_ERR(hc);
- h = hc2 = kmalloc(hsize_bytes * 2, GFP_NOFS);
+ hc2 = kmalloc(hsize_bytes * 2, GFP_NOFS | __GFP_NOWARN);
+ if (hc2 == NULL)
+ hc2 = __vmalloc(hsize_bytes * 2, GFP_NOFS, PAGE_KERNEL);
+
if (!hc2)
return -ENOMEM;
+ h = hc2;
error = gfs2_meta_inode_buffer(dip, &dibh);
if (error)
goto out_kfree;
@@ -1145,7 +1161,10 @@ fail:
gfs2_dinode_out(dip, dibh->b_data);
brelse(dibh);
out_kfree:
- kfree(hc2);
+ if (is_vmalloc_addr(hc2))
+ vfree(hc2);
+ else
+ kfree(hc2);
return error;
}
@@ -1194,9 +1213,7 @@ static int compare_dents(const void *a, const void *b)
/**
* do_filldir_main - read out directory entries
* @dip: The GFS2 inode
- * @offset: The offset in the file to read from
- * @opaque: opaque data to pass to filldir
- * @filldir: The function to pass entries to
+ * @ctx: what to feed the entries to
* @darr: an array of struct gfs2_dirent pointers to read
* @entries: the number of entries in darr
* @copied: pointer to int that's non-zero if a entry has been copied out
@@ -1206,11 +1223,10 @@ static int compare_dents(const void *a, const void *b)
* the possibility that they will fall into different readdir buffers or
* that someone will want to seek to that location.
*
- * Returns: errno, >0 on exception from filldir
+ * Returns: errno, >0 if the actor tells you to stop
*/
-static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
- void *opaque, filldir_t filldir,
+static int do_filldir_main(struct gfs2_inode *dip, struct dir_context *ctx,
const struct gfs2_dirent **darr, u32 entries,
int *copied)
{
@@ -1218,7 +1234,6 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
u64 off, off_next;
unsigned int x, y;
int run = 0;
- int error = 0;
sort(darr, entries, sizeof(struct gfs2_dirent *), compare_dents, NULL);
@@ -1235,9 +1250,9 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
off_next = be32_to_cpu(dent_next->de_hash);
off_next = gfs2_disk_hash2offset(off_next);
- if (off < *offset)
+ if (off < ctx->pos)
continue;
- *offset = off;
+ ctx->pos = off;
if (off_next == off) {
if (*copied && !run)
@@ -1246,26 +1261,25 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
} else
run = 0;
} else {
- if (off < *offset)
+ if (off < ctx->pos)
continue;
- *offset = off;
+ ctx->pos = off;
}
- error = filldir(opaque, (const char *)(dent + 1),
+ if (!dir_emit(ctx, (const char *)(dent + 1),
be16_to_cpu(dent->de_name_len),
- off, be64_to_cpu(dent->de_inum.no_addr),
- be16_to_cpu(dent->de_type));
- if (error)
+ be64_to_cpu(dent->de_inum.no_addr),
+ be16_to_cpu(dent->de_type)))
return 1;
*copied = 1;
}
- /* Increment the *offset by one, so the next time we come into the
+ /* Increment the ctx->pos by one, so the next time we come into the
do_filldir fxn, we get the next entry instead of the last one in the
current leaf */
- (*offset)++;
+ ctx->pos++;
return 0;
}
@@ -1289,8 +1303,8 @@ static void gfs2_free_sort_buffer(void *ptr)
kfree(ptr);
}
-static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
- filldir_t filldir, int *copied, unsigned *depth,
+static int gfs2_dir_read_leaf(struct inode *inode, struct dir_context *ctx,
+ int *copied, unsigned *depth,
u64 leaf_no)
{
struct gfs2_inode *ip = GFS2_I(inode);
@@ -1368,8 +1382,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
} while(lfn);
BUG_ON(entries2 != entries);
- error = do_filldir_main(ip, offset, opaque, filldir, darr,
- entries, copied);
+ error = do_filldir_main(ip, ctx, darr, entries, copied);
out_free:
for(i = 0; i < leaf; i++)
brelse(larr[i]);
@@ -1428,15 +1441,13 @@ static void gfs2_dir_readahead(struct inode *inode, unsigned hsize, u32 index,
/**
* dir_e_read - Reads the entries from a directory into a filldir buffer
* @dip: dinode pointer
- * @offset: the hash of the last entry read shifted to the right once
- * @opaque: buffer for the filldir function to fill
- * @filldir: points to the filldir function to use
+ * @ctx: actor to feed the entries to
*
* Returns: errno
*/
-static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
- filldir_t filldir, struct file_ra_state *f_ra)
+static int dir_e_read(struct inode *inode, struct dir_context *ctx,
+ struct file_ra_state *f_ra)
{
struct gfs2_inode *dip = GFS2_I(inode);
u32 hsize, len = 0;
@@ -1447,7 +1458,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
unsigned depth = 0;
hsize = 1 << dip->i_depth;
- hash = gfs2_dir_offset2hash(*offset);
+ hash = gfs2_dir_offset2hash(ctx->pos);
index = hash >> (32 - dip->i_depth);
if (dip->i_hash_cache == NULL)
@@ -1459,7 +1470,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
gfs2_dir_readahead(inode, hsize, index, f_ra);
while (index < hsize) {
- error = gfs2_dir_read_leaf(inode, offset, opaque, filldir,
+ error = gfs2_dir_read_leaf(inode, ctx,
&copied, &depth,
be64_to_cpu(lp[index]));
if (error)
@@ -1474,8 +1485,8 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
return error;
}
-int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
- filldir_t filldir, struct file_ra_state *f_ra)
+int gfs2_dir_read(struct inode *inode, struct dir_context *ctx,
+ struct file_ra_state *f_ra)
{
struct gfs2_inode *dip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
@@ -1489,7 +1500,7 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
return 0;
if (dip->i_diskflags & GFS2_DIF_EXHASH)
- return dir_e_read(inode, offset, opaque, filldir, f_ra);
+ return dir_e_read(inode, ctx, f_ra);
if (!gfs2_is_stuffed(dip)) {
gfs2_consist_inode(dip);
@@ -1521,7 +1532,7 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
error = -EIO;
goto out;
}
- error = do_filldir_main(dip, offset, opaque, filldir, darr,
+ error = do_filldir_main(dip, ctx, darr,
dip->i_entries, &copied);
out:
kfree(darr);
@@ -1537,9 +1548,9 @@ out:
/**
* gfs2_dir_search - Search a directory
- * @dip: The GFS2 inode
- * @filename:
- * @inode:
+ * @dip: The GFS2 dir inode
+ * @name: The name we are looking up
+ * @fail_on_exist: Fail if the name exists rather than looking it up
*
* This routine searches a directory for a file or another directory.
* Assumes a glock is held on dip.
@@ -1547,22 +1558,25 @@ out:
* Returns: errno
*/
-struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *name)
+struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *name,
+ bool fail_on_exist)
{
struct buffer_head *bh;
struct gfs2_dirent *dent;
- struct inode *inode;
+ u64 addr, formal_ino;
+ u16 dtype;
dent = gfs2_dirent_search(dir, name, gfs2_dirent_find, &bh);
if (dent) {
if (IS_ERR(dent))
return ERR_CAST(dent);
- inode = gfs2_inode_lookup(dir->i_sb,
- be16_to_cpu(dent->de_type),
- be64_to_cpu(dent->de_inum.no_addr),
- be64_to_cpu(dent->de_inum.no_formal_ino), 0);
+ dtype = be16_to_cpu(dent->de_type);
+ addr = be64_to_cpu(dent->de_inum.no_addr);
+ formal_ino = be64_to_cpu(dent->de_inum.no_formal_ino);
brelse(bh);
- return inode;
+ if (fail_on_exist)
+ return ERR_PTR(-EEXIST);
+ return gfs2_inode_lookup(dir->i_sb, dtype, addr, formal_ino, 0);
}
return ERR_PTR(-ENOENT);
}
@@ -1622,7 +1636,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name)
return error;
} while(1);
- gfs2_trans_add_bh(ip->i_gl, obh, 1);
+ gfs2_trans_add_meta(ip->i_gl, obh);
leaf = new_leaf(inode, &bh, be16_to_cpu(oleaf->lf_depth));
if (!leaf) {
@@ -1636,7 +1650,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name)
error = gfs2_meta_inode_buffer(ip, &bh);
if (error)
return error;
- gfs2_trans_add_bh(ip->i_gl, bh, 1);
+ gfs2_trans_add_meta(ip->i_gl, bh);
gfs2_add_inode_blocks(&ip->i_inode, 1);
gfs2_dinode_out(ip, bh->b_data);
brelse(bh);
@@ -1676,16 +1690,11 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name,
be16_add_cpu(&leaf->lf_entries, 1);
}
brelse(bh);
- error = gfs2_meta_inode_buffer(ip, &bh);
- if (error)
- break;
- gfs2_trans_add_bh(ip->i_gl, bh, 1);
ip->i_entries++;
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
if (S_ISDIR(nip->i_inode.i_mode))
inc_nlink(&ip->i_inode);
- gfs2_dinode_out(ip, bh->b_data);
- brelse(bh);
+ mark_inode_dirty(inode);
error = 0;
break;
}
@@ -1800,7 +1809,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
if (IS_ERR(dent))
return PTR_ERR(dent);
- gfs2_trans_add_bh(dip->i_gl, bh, 1);
+ gfs2_trans_add_meta(dip->i_gl, bh);
gfs2_inum_out(nip, dent);
dent->de_type = cpu_to_be16(new_type);
@@ -1809,7 +1818,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
error = gfs2_meta_inode_buffer(dip, &bh);
if (error)
return error;
- gfs2_trans_add_bh(dip->i_gl, bh, 1);
+ gfs2_trans_add_meta(dip->i_gl, bh);
}
dip->i_inode.i_mtime = dip->i_inode.i_ctime = CURRENT_TIME;
@@ -1851,17 +1860,14 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
memset(&rlist, 0, sizeof(struct gfs2_rgrp_list));
ht = kzalloc(size, GFP_NOFS);
+ if (ht == NULL)
+ ht = vzalloc(size);
if (!ht)
return -ENOMEM;
- if (!gfs2_qadata_get(dip)) {
- error = -ENOMEM;
- goto out;
- }
-
- error = gfs2_quota_hold(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+ error = gfs2_quota_hold(dip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
if (error)
- goto out_put;
+ goto out;
/* Count the number of leaves */
bh = leaf_bh;
@@ -1927,7 +1933,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
if (error)
goto out_end_trans;
- gfs2_trans_add_bh(dip->i_gl, dibh, 1);
+ gfs2_trans_add_meta(dip->i_gl, dibh);
/* On the last dealloc, make this a regular file in case we crash.
(We don't want to free these blocks a second time.) */
if (last_dealloc)
@@ -1942,10 +1948,11 @@ out_rg_gunlock:
out_rlist:
gfs2_rlist_free(&rlist);
gfs2_quota_unhold(dip);
-out_put:
- gfs2_qadata_put(dip);
out:
- kfree(ht);
+ if (is_vmalloc_addr(ht))
+ vfree(ht);
+ else
+ kfree(ht);
return error;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-17 11:31:59 +0000