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Diffstat (limited to 'fs/udf/inode.c')
-rw-r--r--fs/udf/inode.c119
1 files changed, 66 insertions, 53 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 1d1358ed80c1..7699df7b3198 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -37,6 +37,7 @@
#include <linux/writeback.h>
#include <linux/slab.h>
#include <linux/crc-itu-t.h>
+#include <linux/mpage.h>
#include "udf_i.h"
#include "udf_sb.h"
@@ -47,13 +48,12 @@ MODULE_LICENSE("GPL");
#define EXTENT_MERGE_SIZE 5
-static mode_t udf_convert_permissions(struct fileEntry *);
+static umode_t udf_convert_permissions(struct fileEntry *);
static int udf_update_inode(struct inode *, int);
static void udf_fill_inode(struct inode *, struct buffer_head *);
static int udf_sync_inode(struct inode *inode);
static int udf_alloc_i_data(struct inode *inode, size_t size);
-static struct buffer_head *inode_getblk(struct inode *, sector_t, int *,
- sector_t *, int *);
+static sector_t inode_getblk(struct inode *, sector_t, int *, int *);
static int8_t udf_insert_aext(struct inode *, struct extent_position,
struct kernel_lb_addr, uint32_t);
static void udf_split_extents(struct inode *, int *, int, int,
@@ -83,12 +83,10 @@ void udf_evict_inode(struct inode *inode)
end_writeback(inode);
if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB &&
inode->i_size != iinfo->i_lenExtents) {
- printk(KERN_WARNING "UDF-fs (%s): Inode %lu (mode %o) has "
- "inode size %llu different from extent length %llu. "
- "Filesystem need not be standards compliant.\n",
- inode->i_sb->s_id, inode->i_ino, inode->i_mode,
- (unsigned long long)inode->i_size,
- (unsigned long long)iinfo->i_lenExtents);
+ udf_warn(inode->i_sb, "Inode %lu (mode %o) has inode size %llu different from extent length %llu. Filesystem need not be standards compliant.\n",
+ inode->i_ino, inode->i_mode,
+ (unsigned long long)inode->i_size,
+ (unsigned long long)iinfo->i_lenExtents);
}
kfree(iinfo->i_ext.i_data);
iinfo->i_ext.i_data = NULL;
@@ -104,7 +102,13 @@ static int udf_writepage(struct page *page, struct writeback_control *wbc)
static int udf_readpage(struct file *file, struct page *page)
{
- return block_read_full_page(page, udf_get_block);
+ return mpage_readpage(page, udf_get_block);
+}
+
+static int udf_readpages(struct file *file, struct address_space *mapping,
+ struct list_head *pages, unsigned nr_pages)
+{
+ return mpage_readpages(mapping, pages, nr_pages, udf_get_block);
}
static int udf_write_begin(struct file *file, struct address_space *mapping,
@@ -139,12 +143,19 @@ static sector_t udf_bmap(struct address_space *mapping, sector_t block)
const struct address_space_operations udf_aops = {
.readpage = udf_readpage,
+ .readpages = udf_readpages,
.writepage = udf_writepage,
.write_begin = udf_write_begin,
.write_end = generic_write_end,
.bmap = udf_bmap,
};
+/*
+ * Expand file stored in ICB to a normal one-block-file
+ *
+ * This function requires i_data_sem for writing and releases it.
+ * This function requires i_mutex held
+ */
int udf_expand_file_adinicb(struct inode *inode)
{
struct page *page;
@@ -163,9 +174,15 @@ int udf_expand_file_adinicb(struct inode *inode)
iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
/* from now on we have normal address_space methods */
inode->i_data.a_ops = &udf_aops;
+ up_write(&iinfo->i_data_sem);
mark_inode_dirty(inode);
return 0;
}
+ /*
+ * Release i_data_sem so that we can lock a page - page lock ranks
+ * above i_data_sem. i_mutex still protects us against file changes.
+ */
+ up_write(&iinfo->i_data_sem);
page = find_or_create_page(inode->i_mapping, 0, GFP_NOFS);
if (!page)
@@ -181,6 +198,7 @@ int udf_expand_file_adinicb(struct inode *inode)
SetPageUptodate(page);
kunmap(page);
}
+ down_write(&iinfo->i_data_sem);
memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0x00,
iinfo->i_lenAlloc);
iinfo->i_lenAlloc = 0;
@@ -190,17 +208,20 @@ int udf_expand_file_adinicb(struct inode *inode)
iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
/* from now on we have normal address_space methods */
inode->i_data.a_ops = &udf_aops;
+ up_write(&iinfo->i_data_sem);
err = inode->i_data.a_ops->writepage(page, &udf_wbc);
if (err) {
/* Restore everything back so that we don't lose data... */
lock_page(page);
kaddr = kmap(page);
+ down_write(&iinfo->i_data_sem);
memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr, kaddr,
inode->i_size);
kunmap(page);
unlock_page(page);
iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
inode->i_data.a_ops = &udf_adinicb_aops;
+ up_write(&iinfo->i_data_sem);
}
page_cache_release(page);
mark_inode_dirty(inode);
@@ -304,7 +325,6 @@ static int udf_get_block(struct inode *inode, sector_t block,
struct buffer_head *bh_result, int create)
{
int err, new;
- struct buffer_head *bh;
sector_t phys = 0;
struct udf_inode_info *iinfo;
@@ -317,7 +337,6 @@ static int udf_get_block(struct inode *inode, sector_t block,
err = -EIO;
new = 0;
- bh = NULL;
iinfo = UDF_I(inode);
down_write(&iinfo->i_data_sem);
@@ -326,13 +345,10 @@ static int udf_get_block(struct inode *inode, sector_t block,
iinfo->i_next_alloc_goal++;
}
- err = 0;
- bh = inode_getblk(inode, block, &err, &phys, &new);
- BUG_ON(bh);
- if (err)
+ phys = inode_getblk(inode, block, &err, &new);
+ if (!phys)
goto abort;
- BUG_ON(!phys);
if (new)
set_buffer_new(bh_result);
@@ -541,11 +557,10 @@ out:
return err;
}
-static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
- int *err, sector_t *phys, int *new)
+static sector_t inode_getblk(struct inode *inode, sector_t block,
+ int *err, int *new)
{
static sector_t last_block;
- struct buffer_head *result = NULL;
struct kernel_long_ad laarr[EXTENT_MERGE_SIZE];
struct extent_position prev_epos, cur_epos, next_epos;
int count = 0, startnum = 0, endnum = 0;
@@ -560,6 +575,8 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
int goal = 0, pgoal = iinfo->i_location.logicalBlockNum;
int lastblock = 0;
+ *err = 0;
+ *new = 0;
prev_epos.offset = udf_file_entry_alloc_offset(inode);
prev_epos.block = iinfo->i_location;
prev_epos.bh = NULL;
@@ -629,8 +646,7 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
brelse(cur_epos.bh);
brelse(next_epos.bh);
newblock = udf_get_lb_pblock(inode->i_sb, &eloc, offset);
- *phys = newblock;
- return NULL;
+ return newblock;
}
last_block = block;
@@ -658,7 +674,7 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
brelse(cur_epos.bh);
brelse(next_epos.bh);
*err = ret;
- return NULL;
+ return 0;
}
c = 0;
offset = 0;
@@ -723,7 +739,7 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
if (!newblocknum) {
brelse(prev_epos.bh);
*err = -ENOSPC;
- return NULL;
+ return 0;
}
iinfo->i_lenExtents += inode->i_sb->s_blocksize;
}
@@ -755,10 +771,10 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
newblock = udf_get_pblock(inode->i_sb, newblocknum,
iinfo->i_location.partitionReferenceNum, 0);
- if (!newblock)
- return NULL;
- *phys = newblock;
- *err = 0;
+ if (!newblock) {
+ *err = -EIO;
+ return 0;
+ }
*new = 1;
iinfo->i_next_alloc_block = block;
iinfo->i_next_alloc_goal = newblocknum;
@@ -769,7 +785,7 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
else
mark_inode_dirty(inode);
- return result;
+ return newblock;
}
static void udf_split_extents(struct inode *inode, int *c, int offset,
@@ -1105,10 +1121,9 @@ int udf_setsize(struct inode *inode, loff_t newsize)
if (bsize <
(udf_file_entry_alloc_offset(inode) + newsize)) {
err = udf_expand_file_adinicb(inode);
- if (err) {
- up_write(&iinfo->i_data_sem);
+ if (err)
return err;
- }
+ down_write(&iinfo->i_data_sem);
} else
iinfo->i_lenAlloc = newsize;
}
@@ -1169,16 +1184,15 @@ static void __udf_read_inode(struct inode *inode)
*/
bh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 0, &ident);
if (!bh) {
- printk(KERN_ERR "udf: udf_read_inode(ino %ld) failed !bh\n",
- inode->i_ino);
+ udf_err(inode->i_sb, "(ino %ld) failed !bh\n", inode->i_ino);
make_bad_inode(inode);
return;
}
if (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE &&
ident != TAG_IDENT_USE) {
- printk(KERN_ERR "udf: udf_read_inode(ino %ld) "
- "failed ident=%d\n", inode->i_ino, ident);
+ udf_err(inode->i_sb, "(ino %ld) failed ident=%d\n",
+ inode->i_ino, ident);
brelse(bh);
make_bad_inode(inode);
return;
@@ -1218,8 +1232,8 @@ static void __udf_read_inode(struct inode *inode)
}
brelse(ibh);
} else if (fe->icbTag.strategyType != cpu_to_le16(4)) {
- printk(KERN_ERR "udf: unsupported strategy type: %d\n",
- le16_to_cpu(fe->icbTag.strategyType));
+ udf_err(inode->i_sb, "unsupported strategy type: %d\n",
+ le16_to_cpu(fe->icbTag.strategyType));
brelse(bh);
make_bad_inode(inode);
return;
@@ -1236,6 +1250,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
int offset;
struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
struct udf_inode_info *iinfo = UDF_I(inode);
+ unsigned int link_count;
fe = (struct fileEntry *)bh->b_data;
efe = (struct extendedFileEntry *)bh->b_data;
@@ -1318,9 +1333,10 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
inode->i_mode &= ~sbi->s_umask;
read_unlock(&sbi->s_cred_lock);
- inode->i_nlink = le16_to_cpu(fe->fileLinkCount);
- if (!inode->i_nlink)
- inode->i_nlink = 1;
+ link_count = le16_to_cpu(fe->fileLinkCount);
+ if (!link_count)
+ link_count = 1;
+ set_nlink(inode, link_count);
inode->i_size = le64_to_cpu(fe->informationLength);
iinfo->i_lenExtents = inode->i_size;
@@ -1413,9 +1429,8 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
udf_debug("METADATA BITMAP FILE-----\n");
break;
default:
- printk(KERN_ERR "udf: udf_fill_inode(ino %ld) failed unknown "
- "file type=%d\n", inode->i_ino,
- fe->icbTag.fileType);
+ udf_err(inode->i_sb, "(ino %ld) failed unknown file type=%d\n",
+ inode->i_ino, fe->icbTag.fileType);
make_bad_inode(inode);
return;
}
@@ -1438,17 +1453,17 @@ static int udf_alloc_i_data(struct inode *inode, size_t size)
iinfo->i_ext.i_data = kmalloc(size, GFP_KERNEL);
if (!iinfo->i_ext.i_data) {
- printk(KERN_ERR "udf:udf_alloc_i_data (ino %ld) "
- "no free memory\n", inode->i_ino);
+ udf_err(inode->i_sb, "(ino %ld) no free memory\n",
+ inode->i_ino);
return -ENOMEM;
}
return 0;
}
-static mode_t udf_convert_permissions(struct fileEntry *fe)
+static umode_t udf_convert_permissions(struct fileEntry *fe)
{
- mode_t mode;
+ umode_t mode;
uint32_t permissions;
uint32_t flags;
@@ -1689,9 +1704,8 @@ out:
if (do_sync) {
sync_dirty_buffer(bh);
if (buffer_write_io_error(bh)) {
- printk(KERN_WARNING "IO error syncing udf inode "
- "[%s:%08lx]\n", inode->i_sb->s_id,
- inode->i_ino);
+ udf_warn(inode->i_sb, "IO error syncing udf inode [%08lx]\n",
+ inode->i_ino);
err = -EIO;
}
}
@@ -1982,8 +1996,7 @@ int8_t udf_current_aext(struct inode *inode, struct extent_position *epos,
*elen = le32_to_cpu(lad->extLength) & UDF_EXTENT_LENGTH_MASK;
break;
default:
- udf_debug("alloc_type = %d unsupported\n",
- iinfo->i_alloc_type);
+ udf_debug("alloc_type = %d unsupported\n", iinfo->i_alloc_type);
return -1;
}
generated by cgit v1.2.3 (git 2.0.4) at 2025-09-06 01:51:51 +0000