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-rw-r--r--fs/ext4/crypto.c61
-rw-r--r--fs/ext4/dir.c4
-rw-r--r--fs/ext4/ext4.h33
-rw-r--r--fs/ext4/file.c16
-rw-r--r--fs/ext4/inline.c18
-rw-r--r--fs/ext4/inode.c176
-rw-r--r--fs/ext4/mballoc.c40
-rw-r--r--fs/ext4/move_extent.c27
-rw-r--r--fs/ext4/page-io.c18
-rw-r--r--fs/ext4/readpage.c14
-rw-r--r--fs/ext4/super.c65
-rw-r--r--fs/ext4/symlink.c4
-rw-r--r--fs/ext4/xattr.c32
13 files changed, 312 insertions, 196 deletions
diff --git a/fs/ext4/crypto.c b/fs/ext4/crypto.c
index edc053a81914..6a6c27373b54 100644
--- a/fs/ext4/crypto.c
+++ b/fs/ext4/crypto.c
@@ -32,6 +32,7 @@
#include <linux/random.h>
#include <linux/scatterlist.h>
#include <linux/spinlock_types.h>
+#include <linux/namei.h>
#include "ext4_extents.h"
#include "xattr.h"
@@ -91,7 +92,8 @@ void ext4_release_crypto_ctx(struct ext4_crypto_ctx *ctx)
* Return: An allocated and initialized encryption context on success; error
* value or NULL otherwise.
*/
-struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode)
+struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode,
+ gfp_t gfp_flags)
{
struct ext4_crypto_ctx *ctx = NULL;
int res = 0;
@@ -118,7 +120,7 @@ struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode)
list_del(&ctx->free_list);
spin_unlock_irqrestore(&ext4_crypto_ctx_lock, flags);
if (!ctx) {
- ctx = kmem_cache_zalloc(ext4_crypto_ctx_cachep, GFP_NOFS);
+ ctx = kmem_cache_zalloc(ext4_crypto_ctx_cachep, gfp_flags);
if (!ctx) {
res = -ENOMEM;
goto out;
@@ -255,7 +257,8 @@ static int ext4_page_crypto(struct inode *inode,
ext4_direction_t rw,
pgoff_t index,
struct page *src_page,
- struct page *dest_page)
+ struct page *dest_page,
+ gfp_t gfp_flags)
{
u8 xts_tweak[EXT4_XTS_TWEAK_SIZE];
@@ -266,7 +269,7 @@ static int ext4_page_crypto(struct inode *inode,
struct crypto_skcipher *tfm = ci->ci_ctfm;
int res = 0;
- req = skcipher_request_alloc(tfm, GFP_NOFS);
+ req = skcipher_request_alloc(tfm, gfp_flags);
if (!req) {
printk_ratelimited(KERN_ERR
"%s: crypto_request_alloc() failed\n",
@@ -283,10 +286,10 @@ static int ext4_page_crypto(struct inode *inode,
EXT4_XTS_TWEAK_SIZE - sizeof(index));
sg_init_table(&dst, 1);
- sg_set_page(&dst, dest_page, PAGE_CACHE_SIZE, 0);
+ sg_set_page(&dst, dest_page, PAGE_SIZE, 0);
sg_init_table(&src, 1);
- sg_set_page(&src, src_page, PAGE_CACHE_SIZE, 0);
- skcipher_request_set_crypt(req, &src, &dst, PAGE_CACHE_SIZE,
+ sg_set_page(&src, src_page, PAGE_SIZE, 0);
+ skcipher_request_set_crypt(req, &src, &dst, PAGE_SIZE,
xts_tweak);
if (rw == EXT4_DECRYPT)
res = crypto_skcipher_decrypt(req);
@@ -307,9 +310,10 @@ static int ext4_page_crypto(struct inode *inode,
return 0;
}
-static struct page *alloc_bounce_page(struct ext4_crypto_ctx *ctx)
+static struct page *alloc_bounce_page(struct ext4_crypto_ctx *ctx,
+ gfp_t gfp_flags)
{
- ctx->w.bounce_page = mempool_alloc(ext4_bounce_page_pool, GFP_NOWAIT);
+ ctx->w.bounce_page = mempool_alloc(ext4_bounce_page_pool, gfp_flags);
if (ctx->w.bounce_page == NULL)
return ERR_PTR(-ENOMEM);
ctx->flags |= EXT4_WRITE_PATH_FL;
@@ -332,7 +336,8 @@ static struct page *alloc_bounce_page(struct ext4_crypto_ctx *ctx)
* error value or NULL.
*/
struct page *ext4_encrypt(struct inode *inode,
- struct page *plaintext_page)
+ struct page *plaintext_page,
+ gfp_t gfp_flags)
{
struct ext4_crypto_ctx *ctx;
struct page *ciphertext_page = NULL;
@@ -340,17 +345,17 @@ struct page *ext4_encrypt(struct inode *inode,
BUG_ON(!PageLocked(plaintext_page));
- ctx = ext4_get_crypto_ctx(inode);
+ ctx = ext4_get_crypto_ctx(inode, gfp_flags);
if (IS_ERR(ctx))
return (struct page *) ctx;
/* The encryption operation will require a bounce page. */
- ciphertext_page = alloc_bounce_page(ctx);
+ ciphertext_page = alloc_bounce_page(ctx, gfp_flags);
if (IS_ERR(ciphertext_page))
goto errout;
ctx->w.control_page = plaintext_page;
err = ext4_page_crypto(inode, EXT4_ENCRYPT, plaintext_page->index,
- plaintext_page, ciphertext_page);
+ plaintext_page, ciphertext_page, gfp_flags);
if (err) {
ciphertext_page = ERR_PTR(err);
errout:
@@ -378,8 +383,8 @@ int ext4_decrypt(struct page *page)
{
BUG_ON(!PageLocked(page));
- return ext4_page_crypto(page->mapping->host,
- EXT4_DECRYPT, page->index, page, page);
+ return ext4_page_crypto(page->mapping->host, EXT4_DECRYPT,
+ page->index, page, page, GFP_NOFS);
}
int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t lblk,
@@ -396,13 +401,13 @@ int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t lblk,
(unsigned long) inode->i_ino, lblk, len);
#endif
- BUG_ON(inode->i_sb->s_blocksize != PAGE_CACHE_SIZE);
+ BUG_ON(inode->i_sb->s_blocksize != PAGE_SIZE);
- ctx = ext4_get_crypto_ctx(inode);
+ ctx = ext4_get_crypto_ctx(inode, GFP_NOFS);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
- ciphertext_page = alloc_bounce_page(ctx);
+ ciphertext_page = alloc_bounce_page(ctx, GFP_NOWAIT);
if (IS_ERR(ciphertext_page)) {
err = PTR_ERR(ciphertext_page);
goto errout;
@@ -410,11 +415,12 @@ int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t lblk,
while (len--) {
err = ext4_page_crypto(inode, EXT4_ENCRYPT, lblk,
- ZERO_PAGE(0), ciphertext_page);
+ ZERO_PAGE(0), ciphertext_page,
+ GFP_NOFS);
if (err)
goto errout;
- bio = bio_alloc(GFP_KERNEL, 1);
+ bio = bio_alloc(GFP_NOWAIT, 1);
if (!bio) {
err = -ENOMEM;
goto errout;
@@ -473,13 +479,19 @@ uint32_t ext4_validate_encryption_key_size(uint32_t mode, uint32_t size)
*/
static int ext4_d_revalidate(struct dentry *dentry, unsigned int flags)
{
- struct inode *dir = d_inode(dentry->d_parent);
- struct ext4_crypt_info *ci = EXT4_I(dir)->i_crypt_info;
+ struct dentry *dir;
+ struct ext4_crypt_info *ci;
int dir_has_key, cached_with_key;
- if (!ext4_encrypted_inode(dir))
- return 0;
+ if (flags & LOOKUP_RCU)
+ return -ECHILD;
+ dir = dget_parent(dentry);
+ if (!ext4_encrypted_inode(d_inode(dir))) {
+ dput(dir);
+ return 0;
+ }
+ ci = EXT4_I(d_inode(dir))->i_crypt_info;
if (ci && ci->ci_keyring_key &&
(ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
(1 << KEY_FLAG_REVOKED) |
@@ -489,6 +501,7 @@ static int ext4_d_revalidate(struct dentry *dentry, unsigned int flags)
/* this should eventually be an flag in d_flags */
cached_with_key = dentry->d_fsdata != NULL;
dir_has_key = (ci != NULL);
+ dput(dir);
/*
* If the dentry was cached without the key, and it is a
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 50ba27cbed03..561d7308b393 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -155,13 +155,13 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
err = ext4_map_blocks(NULL, inode, &map, 0);
if (err > 0) {
pgoff_t index = map.m_pblk >>
- (PAGE_CACHE_SHIFT - inode->i_blkbits);
+ (PAGE_SHIFT - inode->i_blkbits);
if (!ra_has_index(&file->f_ra, index))
page_cache_sync_readahead(
sb->s_bdev->bd_inode->i_mapping,
&file->f_ra, file,
index, 1);
- file->f_ra.prev_pos = (loff_t)index << PAGE_CACHE_SHIFT;
+ file->f_ra.prev_pos = (loff_t)index << PAGE_SHIFT;
bh = ext4_bread(NULL, inode, map.m_lblk, 0);
if (IS_ERR(bh)) {
err = PTR_ERR(bh);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index c04743519865..349afebe21ee 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -912,6 +912,29 @@ do { \
#include "extents_status.h"
/*
+ * Lock subclasses for i_data_sem in the ext4_inode_info structure.
+ *
+ * These are needed to avoid lockdep false positives when we need to
+ * allocate blocks to the quota inode during ext4_map_blocks(), while
+ * holding i_data_sem for a normal (non-quota) inode. Since we don't
+ * do quota tracking for the quota inode, this avoids deadlock (as
+ * well as infinite recursion, since it isn't turtles all the way
+ * down...)
+ *
+ * I_DATA_SEM_NORMAL - Used for most inodes
+ * I_DATA_SEM_OTHER - Used by move_inode.c for the second normal inode
+ * where the second inode has larger inode number
+ * than the first
+ * I_DATA_SEM_QUOTA - Used for quota inodes only
+ */
+enum {
+ I_DATA_SEM_NORMAL = 0,
+ I_DATA_SEM_OTHER,
+ I_DATA_SEM_QUOTA,
+};
+
+
+/*
* fourth extended file system inode data in memory
*/
struct ext4_inode_info {
@@ -1961,7 +1984,7 @@ ext4_rec_len_from_disk(__le16 dlen, unsigned blocksize)
{
unsigned len = le16_to_cpu(dlen);
-#if (PAGE_CACHE_SIZE >= 65536)
+#if (PAGE_SIZE >= 65536)
if (len == EXT4_MAX_REC_LEN || len == 0)
return blocksize;
return (len & 65532) | ((len & 3) << 16);
@@ -1974,7 +1997,7 @@ static inline __le16 ext4_rec_len_to_disk(unsigned len, unsigned blocksize)
{
if ((len > blocksize) || (blocksize > (1 << 18)) || (len & 3))
BUG();
-#if (PAGE_CACHE_SIZE >= 65536)
+#if (PAGE_SIZE >= 65536)
if (len < 65536)
return cpu_to_le16(len);
if (len == blocksize) {
@@ -2282,11 +2305,13 @@ extern struct kmem_cache *ext4_crypt_info_cachep;
bool ext4_valid_contents_enc_mode(uint32_t mode);
uint32_t ext4_validate_encryption_key_size(uint32_t mode, uint32_t size);
extern struct workqueue_struct *ext4_read_workqueue;
-struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode);
+struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode,
+ gfp_t gfp_flags);
void ext4_release_crypto_ctx(struct ext4_crypto_ctx *ctx);
void ext4_restore_control_page(struct page *data_page);
struct page *ext4_encrypt(struct inode *inode,
- struct page *plaintext_page);
+ struct page *plaintext_page,
+ gfp_t gfp_flags);
int ext4_decrypt(struct page *page);
int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t lblk,
ext4_fsblk_t pblk, ext4_lblk_t len);
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 6659e216385e..fa2208bae2e1 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -329,7 +329,7 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
struct super_block *sb = inode->i_sb;
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
struct vfsmount *mnt = filp->f_path.mnt;
- struct inode *dir = filp->f_path.dentry->d_parent->d_inode;
+ struct dentry *dir;
struct path path;
char buf[64], *cp;
int ret;
@@ -373,14 +373,18 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
if (ext4_encryption_info(inode) == NULL)
return -ENOKEY;
}
- if (ext4_encrypted_inode(dir) &&
- !ext4_is_child_context_consistent_with_parent(dir, inode)) {
+
+ dir = dget_parent(file_dentry(filp));
+ if (ext4_encrypted_inode(d_inode(dir)) &&
+ !ext4_is_child_context_consistent_with_parent(d_inode(dir), inode)) {
ext4_warning(inode->i_sb,
"Inconsistent encryption contexts: %lu/%lu\n",
- (unsigned long) dir->i_ino,
+ (unsigned long) d_inode(dir)->i_ino,
(unsigned long) inode->i_ino);
+ dput(dir);
return -EPERM;
}
+ dput(dir);
/*
* Set up the jbd2_inode if we are opening the inode for
* writing and the journal is present
@@ -428,8 +432,8 @@ static int ext4_find_unwritten_pgoff(struct inode *inode,
lastoff = startoff;
endoff = (loff_t)end_blk << blkbits;
- index = startoff >> PAGE_CACHE_SHIFT;
- end = endoff >> PAGE_CACHE_SHIFT;
+ index = startoff >> PAGE_SHIFT;
+ end = endoff >> PAGE_SHIFT;
pagevec_init(&pvec, 0);
do {
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index 7cbdd3752ba5..7bc6c855cc18 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -482,7 +482,7 @@ static int ext4_read_inline_page(struct inode *inode, struct page *page)
ret = ext4_read_inline_data(inode, kaddr, len, &iloc);
flush_dcache_page(page);
kunmap_atomic(kaddr);
- zero_user_segment(page, len, PAGE_CACHE_SIZE);
+ zero_user_segment(page, len, PAGE_SIZE);
SetPageUptodate(page);
brelse(iloc.bh);
@@ -507,7 +507,7 @@ int ext4_readpage_inline(struct inode *inode, struct page *page)
if (!page->index)
ret = ext4_read_inline_page(inode, page);
else if (!PageUptodate(page)) {
- zero_user_segment(page, 0, PAGE_CACHE_SIZE);
+ zero_user_segment(page, 0, PAGE_SIZE);
SetPageUptodate(page);
}
@@ -595,7 +595,7 @@ retry:
if (ret) {
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
page = NULL;
ext4_orphan_add(handle, inode);
up_write(&EXT4_I(inode)->xattr_sem);
@@ -621,7 +621,7 @@ retry:
out:
if (page) {
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
}
if (sem_held)
up_write(&EXT4_I(inode)->xattr_sem);
@@ -690,7 +690,7 @@ int ext4_try_to_write_inline_data(struct address_space *mapping,
if (!ext4_has_inline_data(inode)) {
ret = 0;
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
goto out_up_read;
}
@@ -815,7 +815,7 @@ static int ext4_da_convert_inline_data_to_extent(struct address_space *mapping,
if (ret) {
up_read(&EXT4_I(inode)->xattr_sem);
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
ext4_truncate_failed_write(inode);
return ret;
}
@@ -829,7 +829,7 @@ out:
up_read(&EXT4_I(inode)->xattr_sem);
if (page) {
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
}
return ret;
}
@@ -919,7 +919,7 @@ retry_journal:
out_release_page:
up_read(&EXT4_I(inode)->xattr_sem);
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
out_journal:
ext4_journal_stop(handle);
out:
@@ -947,7 +947,7 @@ int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
i_size_changed = 1;
}
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
/*
* Don't mark the inode dirty under page lock. First, it unnecessarily
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index dab84a2530ff..981a1fc30eaa 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -763,39 +763,47 @@ int ext4_get_block_unwritten(struct inode *inode, sector_t iblock,
/* Maximum number of blocks we map for direct IO at once. */
#define DIO_MAX_BLOCKS 4096
-static handle_t *start_dio_trans(struct inode *inode,
- struct buffer_head *bh_result)
+/*
+ * Get blocks function for the cases that need to start a transaction -
+ * generally difference cases of direct IO and DAX IO. It also handles retries
+ * in case of ENOSPC.
+ */
+static int ext4_get_block_trans(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int flags)
{
int dio_credits;
+ handle_t *handle;
+ int retries = 0;
+ int ret;
/* Trim mapping request to maximum we can map at once for DIO */
if (bh_result->b_size >> inode->i_blkbits > DIO_MAX_BLOCKS)
bh_result->b_size = DIO_MAX_BLOCKS << inode->i_blkbits;
dio_credits = ext4_chunk_trans_blocks(inode,
bh_result->b_size >> inode->i_blkbits);
- return ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS, dio_credits);
+retry:
+ handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS, dio_credits);
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+
+ ret = _ext4_get_block(inode, iblock, bh_result, flags);
+ ext4_journal_stop(handle);
+
+ if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
+ goto retry;
+ return ret;
}
/* Get block function for DIO reads and writes to inodes without extents */
int ext4_dio_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh, int create)
{
- handle_t *handle;
- int ret;
-
/* We don't expect handle for direct IO */
WARN_ON_ONCE(ext4_journal_current_handle());
- if (create) {
- handle = start_dio_trans(inode, bh);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
- }
- ret = _ext4_get_block(inode, iblock, bh,
- create ? EXT4_GET_BLOCKS_CREATE : 0);
- if (create)
- ext4_journal_stop(handle);
- return ret;
+ if (!create)
+ return _ext4_get_block(inode, iblock, bh, 0);
+ return ext4_get_block_trans(inode, iblock, bh, EXT4_GET_BLOCKS_CREATE);
}
/*
@@ -806,18 +814,13 @@ int ext4_dio_get_block(struct inode *inode, sector_t iblock,
static int ext4_dio_get_block_unwritten_async(struct inode *inode,
sector_t iblock, struct buffer_head *bh_result, int create)
{
- handle_t *handle;
int ret;
/* We don't expect handle for direct IO */
WARN_ON_ONCE(ext4_journal_current_handle());
- handle = start_dio_trans(inode, bh_result);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
- ret = _ext4_get_block(inode, iblock, bh_result,
- EXT4_GET_BLOCKS_IO_CREATE_EXT);
- ext4_journal_stop(handle);
+ ret = ext4_get_block_trans(inode, iblock, bh_result,
+ EXT4_GET_BLOCKS_IO_CREATE_EXT);
/*
* When doing DIO using unwritten extents, we need io_end to convert
@@ -850,18 +853,13 @@ static int ext4_dio_get_block_unwritten_async(struct inode *inode,
static int ext4_dio_get_block_unwritten_sync(struct inode *inode,
sector_t iblock, struct buffer_head *bh_result, int create)
{
- handle_t *handle;
int ret;
/* We don't expect handle for direct IO */
WARN_ON_ONCE(ext4_journal_current_handle());
- handle = start_dio_trans(inode, bh_result);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
- ret = _ext4_get_block(inode, iblock, bh_result,
- EXT4_GET_BLOCKS_IO_CREATE_EXT);
- ext4_journal_stop(handle);
+ ret = ext4_get_block_trans(inode, iblock, bh_result,
+ EXT4_GET_BLOCKS_IO_CREATE_EXT);
/*
* Mark inode as having pending DIO writes to unwritten extents.
@@ -1057,7 +1055,7 @@ int do_journal_get_write_access(handle_t *handle,
static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len,
get_block_t *get_block)
{
- unsigned from = pos & (PAGE_CACHE_SIZE - 1);
+ unsigned from = pos & (PAGE_SIZE - 1);
unsigned to = from + len;
struct inode *inode = page->mapping->host;
unsigned block_start, block_end;
@@ -1069,15 +1067,15 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len,
bool decrypt = false;
BUG_ON(!PageLocked(page));
- BUG_ON(from > PAGE_CACHE_SIZE);
- BUG_ON(to > PAGE_CACHE_SIZE);
+ BUG_ON(from > PAGE_SIZE);
+ BUG_ON(to > PAGE_SIZE);
BUG_ON(from > to);
if (!page_has_buffers(page))
create_empty_buffers(page, blocksize, 0);
head = page_buffers(page);
bbits = ilog2(blocksize);
- block = (sector_t)page->index << (PAGE_CACHE_SHIFT - bbits);
+ block = (sector_t)page->index << (PAGE_SHIFT - bbits);
for (bh = head, block_start = 0; bh != head || !block_start;
block++, block_start = block_end, bh = bh->b_this_page) {
@@ -1159,8 +1157,8 @@ static int ext4_write_begin(struct file *file, struct address_space *mapping,
* we allocate blocks but write fails for some reason
*/
needed_blocks = ext4_writepage_trans_blocks(inode) + 1;
- index = pos >> PAGE_CACHE_SHIFT;
- from = pos & (PAGE_CACHE_SIZE - 1);
+ index = pos >> PAGE_SHIFT;
+ from = pos & (PAGE_SIZE - 1);
to = from + len;
if (ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)) {
@@ -1188,7 +1186,7 @@ retry_grab:
retry_journal:
handle = ext4_journal_start(inode, EXT4_HT_WRITE_PAGE, needed_blocks);
if (IS_ERR(handle)) {
- page_cache_release(page);
+ put_page(page);
return PTR_ERR(handle);
}
@@ -1196,7 +1194,7 @@ retry_journal:
if (page->mapping != mapping) {
/* The page got truncated from under us */
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
ext4_journal_stop(handle);
goto retry_grab;
}
@@ -1252,7 +1250,7 @@ retry_journal:
if (ret == -ENOSPC &&
ext4_should_retry_alloc(inode->i_sb, &retries))
goto retry_journal;
- page_cache_release(page);
+ put_page(page);
return ret;
}
*pagep = page;
@@ -1295,7 +1293,7 @@ static int ext4_write_end(struct file *file,
ret = ext4_jbd2_file_inode(handle, inode);
if (ret) {
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
goto errout;
}
}
@@ -1315,7 +1313,7 @@ static int ext4_write_end(struct file *file,
*/
i_size_changed = ext4_update_inode_size(inode, pos + copied);
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
if (old_size < pos)
pagecache_isize_extended(inode, old_size, pos);
@@ -1399,7 +1397,7 @@ static int ext4_journalled_write_end(struct file *file,
int size_changed = 0;
trace_ext4_journalled_write_end(inode, pos, len, copied);
- from = pos & (PAGE_CACHE_SIZE - 1);
+ from = pos & (PAGE_SIZE - 1);
to = from + len;
BUG_ON(!ext4_handle_valid(handle));
@@ -1423,7 +1421,7 @@ static int ext4_journalled_write_end(struct file *file,
ext4_set_inode_state(inode, EXT4_STATE_JDATA);
EXT4_I(inode)->i_datasync_tid = handle->h_transaction->t_tid;
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
if (old_size < pos)
pagecache_isize_extended(inode, old_size, pos);
@@ -1537,7 +1535,7 @@ static void ext4_da_page_release_reservation(struct page *page,
int num_clusters;
ext4_fsblk_t lblk;
- BUG_ON(stop > PAGE_CACHE_SIZE || stop < length);
+ BUG_ON(stop > PAGE_SIZE || stop < length);
head = page_buffers(page);
bh = head;
@@ -1553,7 +1551,7 @@ static void ext4_da_page_release_reservation(struct page *page,
clear_buffer_delay(bh);
} else if (contiguous_blks) {
lblk = page->index <<
- (PAGE_CACHE_SHIFT - inode->i_blkbits);
+ (PAGE_SHIFT - inode->i_blkbits);
lblk += (curr_off >> inode->i_blkbits) -
contiguous_blks;
ext4_es_remove_extent(inode, lblk, contiguous_blks);
@@ -1563,7 +1561,7 @@ static void ext4_da_page_release_reservation(struct page *page,
} while ((bh = bh->b_this_page) != head);
if (contiguous_blks) {
- lblk = page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
+ lblk = page->index << (PAGE_SHIFT - inode->i_blkbits);
lblk += (curr_off >> inode->i_blkbits) - contiguous_blks;
ext4_es_remove_extent(inode, lblk, contiguous_blks);
}
@@ -1572,7 +1570,7 @@ static void ext4_da_page_release_reservation(struct page *page,
* need to release the reserved space for that cluster. */
num_clusters = EXT4_NUM_B2C(sbi, to_release);
while (num_clusters > 0) {
- lblk = (page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits)) +
+ lblk = (page->index << (PAGE_SHIFT - inode->i_blkbits)) +
((num_clusters - 1) << sbi->s_cluster_bits);
if (sbi->s_cluster_ratio == 1 ||
!ext4_find_delalloc_cluster(inode, lblk))
@@ -1619,8 +1617,8 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd,
end = mpd->next_page - 1;
if (invalidate) {
ext4_lblk_t start, last;
- start = index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
- last = end << (PAGE_CACHE_SHIFT - inode->i_blkbits);
+ start = index << (PAGE_SHIFT - inode->i_blkbits);
+ last = end << (PAGE_SHIFT - inode->i_blkbits);
ext4_es_remove_extent(inode, start, last - start + 1);
}
@@ -1636,7 +1634,7 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd,
BUG_ON(!PageLocked(page));
BUG_ON(PageWriteback(page));
if (invalidate) {
- block_invalidatepage(page, 0, PAGE_CACHE_SIZE);
+ block_invalidatepage(page, 0, PAGE_SIZE);
ClearPageUptodate(page);
}
unlock_page(page);
@@ -2007,10 +2005,10 @@ static int ext4_writepage(struct page *page,
trace_ext4_writepage(page);
size = i_size_read(inode);
- if (page->index == size >> PAGE_CACHE_SHIFT)
- len = size & ~PAGE_CACHE_MASK;
+ if (page->index == size >> PAGE_SHIFT)
+ len = size & ~PAGE_MASK;
else
- len = PAGE_CACHE_SIZE;
+ len = PAGE_SIZE;
page_bufs = page_buffers(page);
/*
@@ -2034,7 +2032,7 @@ static int ext4_writepage(struct page *page,
ext4_bh_delay_or_unwritten)) {
redirty_page_for_writepage(wbc, page);
if ((current->flags & PF_MEMALLOC) ||
- (inode->i_sb->s_blocksize == PAGE_CACHE_SIZE)) {
+ (inode->i_sb->s_blocksize == PAGE_SIZE)) {
/*
* For memory cleaning there's no point in writing only
* some buffers. So just bail out. Warn if we came here
@@ -2076,10 +2074,10 @@ static int mpage_submit_page(struct mpage_da_data *mpd, struct page *page)
int err;
BUG_ON(page->index != mpd->first_page);
- if (page->index == size >> PAGE_CACHE_SHIFT)
- len = size & ~PAGE_CACHE_MASK;
+ if (page->index == size >> PAGE_SHIFT)
+ len = size & ~PAGE_MASK;
else
- len = PAGE_CACHE_SIZE;
+ len = PAGE_SIZE;
clear_page_dirty_for_io(page);
err = ext4_bio_write_page(&mpd->io_submit, page, len, mpd->wbc, false);
if (!err)
@@ -2213,7 +2211,7 @@ static int mpage_map_and_submit_buffers(struct mpage_da_data *mpd)
int nr_pages, i;
struct inode *inode = mpd->inode;
struct buffer_head *head, *bh;
- int bpp_bits = PAGE_CACHE_SHIFT - inode->i_blkbits;
+ int bpp_bits = PAGE_SHIFT - inode->i_blkbits;
pgoff_t start, end;
ext4_lblk_t lblk;
sector_t pblock;
@@ -2274,7 +2272,7 @@ static int mpage_map_and_submit_buffers(struct mpage_da_data *mpd)
* supports blocksize < pagesize as we will try to
* convert potentially unmapped parts of inode.
*/
- mpd->io_submit.io_end->size += PAGE_CACHE_SIZE;
+ mpd->io_submit.io_end->size += PAGE_SIZE;
/* Page fully mapped - let IO run! */
err = mpage_submit_page(mpd, page);
if (err < 0) {
@@ -2426,7 +2424,7 @@ update_disksize:
* Update on-disk size after IO is submitted. Races with
* truncate are avoided by checking i_size under i_data_sem.
*/
- disksize = ((loff_t)mpd->first_page) << PAGE_CACHE_SHIFT;
+ disksize = ((loff_t)mpd->first_page) << PAGE_SHIFT;
if (disksize > EXT4_I(inode)->i_disksize) {
int err2;
loff_t i_size;
@@ -2562,7 +2560,7 @@ static int mpage_prepare_extent_to_map(struct mpage_da_data *mpd)
mpd->next_page = page->index + 1;
/* Add all dirty buffers to mpd */
lblk = ((ext4_lblk_t)page->index) <<
- (PAGE_CACHE_SHIFT - blkbits);
+ (PAGE_SHIFT - blkbits);
head = page_buffers(page);
err = mpage_process_page_bufs(mpd, head, head, lblk);
if (err <= 0)
@@ -2647,7 +2645,7 @@ static int ext4_writepages(struct address_space *mapping,
* We may need to convert up to one extent per block in
* the page and we may dirty the inode.
*/
- rsv_blocks = 1 + (PAGE_CACHE_SIZE >> inode->i_blkbits);
+ rsv_blocks = 1 + (PAGE_SIZE >> inode->i_blkbits);
}
/*
@@ -2678,8 +2676,8 @@ static int ext4_writepages(struct address_space *mapping,
mpd.first_page = writeback_index;
mpd.last_page = -1;
} else {
- mpd.first_page = wbc->range_start >> PAGE_CACHE_SHIFT;
- mpd.last_page = wbc->range_end >> PAGE_CACHE_SHIFT;
+ mpd.first_page = wbc->range_start >> PAGE_SHIFT;
+ mpd.last_page = wbc->range_end >> PAGE_SHIFT;
}
mpd.inode = inode;
@@ -2838,7 +2836,7 @@ static int ext4_da_write_begin(struct file *file, struct address_space *mapping,
struct inode *inode = mapping->host;
handle_t *handle;
- index = pos >> PAGE_CACHE_SHIFT;
+ index = pos >> PAGE_SHIFT;
if (ext4_nonda_switch(inode->i_sb)) {
*fsdata = (void *)FALL_BACK_TO_NONDELALLOC;
@@ -2881,7 +2879,7 @@ retry_journal:
handle = ext4_journal_start(inode, EXT4_HT_WRITE_PAGE,
ext4_da_write_credits(inode, pos, len));
if (IS_ERR(handle)) {
- page_cache_release(page);
+ put_page(page);
return PTR_ERR(handle);
}
@@ -2889,7 +2887,7 @@ retry_journal:
if (page->mapping != mapping) {
/* The page got truncated from under us */
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
ext4_journal_stop(handle);
goto retry_grab;
}
@@ -2917,7 +2915,7 @@ retry_journal:
ext4_should_retry_alloc(inode->i_sb, &retries))
goto retry_journal;
- page_cache_release(page);
+ put_page(page);
return ret;
}
@@ -2965,7 +2963,7 @@ static int ext4_da_write_end(struct file *file,
len, copied, page, fsdata);
trace_ext4_da_write_end(inode, pos, len, copied);
- start = pos & (PAGE_CACHE_SIZE - 1);
+ start = pos & (PAGE_SIZE - 1);
end = start + copied - 1;
/*
@@ -3187,7 +3185,7 @@ static int __ext4_journalled_invalidatepage(struct page *page,
/*
* If it's a full truncate we just forget about the pending dirtying
*/
- if (offset == 0 && length == PAGE_CACHE_SIZE)
+ if (offset == 0 && length == PAGE_SIZE)
ClearPageChecked(page);
return jbd2_journal_invalidatepage(journal, page, offset, length);
@@ -3556,8 +3554,8 @@ void ext4_set_aops(struct inode *inode)
static int __ext4_block_zero_page_range(handle_t *handle,
struct address_space *mapping, loff_t from, loff_t length)
{
- ext4_fsblk_t index = from >> PAGE_CACHE_SHIFT;
- unsigned offset = from & (PAGE_CACHE_SIZE-1);
+ ext4_fsblk_t index = from >> PAGE_SHIFT;
+ unsigned offset = from & (PAGE_SIZE-1);
unsigned blocksize, pos;
ext4_lblk_t iblock;
struct inode *inode = mapping->host;
@@ -3565,14 +3563,14 @@ static int __ext4_block_zero_page_range(handle_t *handle,
struct page *page;
int err = 0;
- page = find_or_create_page(mapping, from >> PAGE_CACHE_SHIFT,
+ page = find_or_create_page(mapping, from >> PAGE_SHIFT,
mapping_gfp_constraint(mapping, ~__GFP_FS));
if (!page)
return -ENOMEM;
blocksize = inode->i_sb->s_blocksize;
- iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
+ iblock = index << (PAGE_SHIFT - inode->i_sb->s_blocksize_bits);
if (!page_has_buffers(page))
create_empty_buffers(page, blocksize, 0);
@@ -3614,7 +3612,7 @@ static int __ext4_block_zero_page_range(handle_t *handle,
ext4_encrypted_inode(inode)) {
/* We expect the key to be set. */
BUG_ON(!ext4_has_encryption_key(inode));
- BUG_ON(blocksize != PAGE_CACHE_SIZE);
+ BUG_ON(blocksize != PAGE_SIZE);
WARN_ON_ONCE(ext4_decrypt(page));
}
}
@@ -3638,7 +3636,7 @@ static int __ext4_block_zero_page_range(handle_t *handle,
unlock:
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
return err;
}
@@ -3653,7 +3651,7 @@ static int ext4_block_zero_page_range(handle_t *handle,
struct address_space *mapping, loff_t from, loff_t length)
{
struct inode *inode = mapping->host;
- unsigned offset = from & (PAGE_CACHE_SIZE-1);
+ unsigned offset = from & (PAGE_SIZE-1);
unsigned blocksize = inode->i_sb->s_blocksize;
unsigned max = blocksize - (offset & (blocksize - 1));
@@ -3678,7 +3676,7 @@ static int ext4_block_zero_page_range(handle_t *handle,
static int ext4_block_truncate_page(handle_t *handle,
struct address_space *mapping, loff_t from)
{
- unsigned offset = from & (PAGE_CACHE_SIZE-1);
+ unsigned offset = from & (PAGE_SIZE-1);
unsigned length;
unsigned blocksize;
struct inode *inode = mapping->host;
@@ -3816,7 +3814,7 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
*/
if (offset + length > inode->i_size) {
length = inode->i_size +
- PAGE_CACHE_SIZE - (inode->i_size & (PAGE_CACHE_SIZE - 1)) -
+ PAGE_SIZE - (inode->i_size & (PAGE_SIZE - 1)) -
offset;
}
@@ -4891,23 +4889,23 @@ static void ext4_wait_for_tail_page_commit(struct inode *inode)
tid_t commit_tid = 0;
int ret;
- offset = inode->i_size & (PAGE_CACHE_SIZE - 1);
+ offset = inode->i_size & (PAGE_SIZE - 1);
/*
* All buffers in the last page remain valid? Then there's nothing to
- * do. We do the check mainly to optimize the common PAGE_CACHE_SIZE ==
+ * do. We do the check mainly to optimize the common PAGE_SIZE ==
* blocksize case
*/
- if (offset > PAGE_CACHE_SIZE - (1 << inode->i_blkbits))
+ if (offset > PAGE_SIZE - (1 << inode->i_blkbits))
return;
while (1) {
page = find_lock_page(inode->i_mapping,
- inode->i_size >> PAGE_CACHE_SHIFT);
+ inode->i_size >> PAGE_SHIFT);
if (!page)
return;
ret = __ext4_journalled_invalidatepage(page, offset,
- PAGE_CACHE_SIZE - offset);
+ PAGE_SIZE - offset);
unlock_page(page);
- page_cache_release(page);
+ put_page(page);
if (ret != -EBUSY)
return;
commit_tid = 0;
@@ -5546,10 +5544,10 @@ int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
goto out;
}
- if (page->index == size >> PAGE_CACHE_SHIFT)
- len = size & ~PAGE_CACHE_MASK;
+ if (page->index == size >> PAGE_SHIFT)
+ len = size & ~PAGE_MASK;
else
- len = PAGE_CACHE_SIZE;
+ len = PAGE_SIZE;
/*
* Return if we have all the buffers mapped. This avoids the need to do
* journal_start/journal_stop which can block and take a long time
@@ -5580,7 +5578,7 @@ retry_alloc:
ret = block_page_mkwrite(vma, vmf, get_block);
if (!ret && ext4_should_journal_data(inode)) {
if (ext4_walk_page_buffers(handle, page_buffers(page), 0,
- PAGE_CACHE_SIZE, NULL, do_journal_get_write_access)) {
+ PAGE_SIZE, NULL, do_journal_get_write_access)) {
unlock_page(page);
ret = VM_FAULT_SIGBUS;
ext4_journal_stop(handle);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 50e05df28f66..eeeade76012e 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -119,7 +119,7 @@ MODULE_PARM_DESC(mballoc_debug, "Debugging level for ext4's mballoc");
*
*
* one block each for bitmap and buddy information. So for each group we
- * take up 2 blocks. A page can contain blocks_per_page (PAGE_CACHE_SIZE /
+ * take up 2 blocks. A page can contain blocks_per_page (PAGE_SIZE /
* blocksize) blocks. So it can have information regarding groups_per_page
* which is blocks_per_page/2
*
@@ -807,7 +807,7 @@ static void mb_regenerate_buddy(struct ext4_buddy *e4b)
*
* one block each for bitmap and buddy information.
* So for each group we take up 2 blocks. A page can
- * contain blocks_per_page (PAGE_CACHE_SIZE / blocksize) blocks.
+ * contain blocks_per_page (PAGE_SIZE / blocksize) blocks.
* So it can have information regarding groups_per_page which
* is blocks_per_page/2
*
@@ -839,7 +839,7 @@ static int ext4_mb_init_cache(struct page *page, char *incore, gfp_t gfp)
sb = inode->i_sb;
ngroups = ext4_get_groups_count(sb);
blocksize = 1 << inode->i_blkbits;
- blocks_per_page = PAGE_CACHE_SIZE / blocksize;
+ blocks_per_page = PAGE_SIZE / blocksize;
groups_per_page = blocks_per_page >> 1;
if (groups_per_page == 0)
@@ -993,7 +993,7 @@ static int ext4_mb_get_buddy_page_lock(struct super_block *sb,
e4b->bd_buddy_page = NULL;
e4b->bd_bitmap_page = NULL;
- blocks_per_page = PAGE_CACHE_SIZE / sb->s_blocksize;
+ blocks_per_page = PAGE_SIZE / sb->s_blocksize;
/*
* the buddy cache inode stores the block bitmap
* and buddy information in consecutive blocks.
@@ -1028,11 +1028,11 @@ static void ext4_mb_put_buddy_page_lock(struct ext4_buddy *e4b)
{
if (e4b->bd_bitmap_page) {
unlock_page(e4b->bd_bitmap_page);
- page_cache_release(e4b->bd_bitmap_page);
+ put_page(e4b->bd_bitmap_page);
}
if (e4b->bd_buddy_page) {
unlock_page(e4b->bd_buddy_page);
- page_cache_release(e4b->bd_buddy_page);
+ put_page(e4b->bd_buddy_page);
}
}
@@ -1125,7 +1125,7 @@ ext4_mb_load_buddy_gfp(struct super_block *sb, ext4_group_t group,
might_sleep();
mb_debug(1, "load group %u\n", group);
- blocks_per_page = PAGE_CACHE_SIZE / sb->s_blocksize;
+ blocks_per_page = PAGE_SIZE / sb->s_blocksize;
grp = ext4_get_group_info(sb, group);
e4b->bd_blkbits = sb->s_blocksize_bits;
@@ -1167,7 +1167,7 @@ ext4_mb_load_buddy_gfp(struct super_block *sb, ext4_group_t group,
* is yet to initialize the same. So
* wait for it to initialize.
*/
- page_cache_release(page);
+ put_page(page);
page = find_or_create_page(inode->i_mapping, pnum, gfp);
if (page) {
BUG_ON(page->mapping != inode->i_mapping);
@@ -1203,7 +1203,7 @@ ext4_mb_load_buddy_gfp(struct super_block *sb, ext4_group_t group,
page = find_get_page_flags(inode->i_mapping, pnum, FGP_ACCESSED);
if (page == NULL || !PageUptodate(page)) {
if (page)
- page_cache_release(page);
+ put_page(page);
page = find_or_create_page(inode->i_mapping, pnum, gfp);
if (page) {
BUG_ON(page->mapping != inode->i_mapping);
@@ -1238,11 +1238,11 @@ ext4_mb_load_buddy_gfp(struct super_block *sb, ext4_group_t group,
err:
if (page)
- page_cache_release(page);
+ put_page(page);
if (e4b->bd_bitmap_page)
- page_cache_release(e4b->bd_bitmap_page);
+ put_page(e4b->bd_bitmap_page);
if (e4b->bd_buddy_page)
- page_cache_release(e4b->bd_buddy_page);
+ put_page(e4b->bd_buddy_page);
e4b->bd_buddy = NULL;
e4b->bd_bitmap = NULL;
return ret;
@@ -1257,9 +1257,9 @@ static int ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group,
static void ext4_mb_unload_buddy(struct ext4_buddy *e4b)
{
if (e4b->bd_bitmap_page)
- page_cache_release(e4b->bd_bitmap_page);
+ put_page(e4b->bd_bitmap_page);
if (e4b->bd_buddy_page)
- page_cache_release(e4b->bd_buddy_page);
+ put_page(e4b->bd_buddy_page);
}
@@ -2833,8 +2833,8 @@ static void ext4_free_data_callback(struct super_block *sb,
/* No more items in the per group rb tree
* balance refcounts from ext4_mb_free_metadata()
*/
- page_cache_release(e4b.bd_buddy_page);
- page_cache_release(e4b.bd_bitmap_page);
+ put_page(e4b.bd_buddy_page);
+ put_page(e4b.bd_bitmap_page);
}
ext4_unlock_group(sb, entry->efd_group);
kmem_cache_free(ext4_free_data_cachep, entry);
@@ -4385,9 +4385,9 @@ static int ext4_mb_release_context(struct ext4_allocation_context *ac)
ext4_mb_put_pa(ac, ac->ac_sb, pa);
}
if (ac->ac_bitmap_page)
- page_cache_release(ac->ac_bitmap_page);
+ put_page(ac->ac_bitmap_page);
if (ac->ac_buddy_page)
- page_cache_release(ac->ac_buddy_page);
+ put_page(ac->ac_buddy_page);
if (ac->ac_flags & EXT4_MB_HINT_GROUP_ALLOC)
mutex_unlock(&ac->ac_lg->lg_mutex);
ext4_mb_collect_stats(ac);
@@ -4599,8 +4599,8 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
* otherwise we'll refresh it from
* on-disk bitmap and lose not-yet-available
* blocks */
- page_cache_get(e4b->bd_buddy_page);
- page_cache_get(e4b->bd_bitmap_page);
+ get_page(e4b->bd_buddy_page);
+ get_page(e4b->bd_bitmap_page);
}
while (*n) {
parent = *n;
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index 4098acc701c3..325cef48b39a 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -60,10 +60,10 @@ ext4_double_down_write_data_sem(struct inode *first, struct inode *second)
{
if (first < second) {
down_write(&EXT4_I(first)->i_data_sem);
- down_write_nested(&EXT4_I(second)->i_data_sem, SINGLE_DEPTH_NESTING);
+ down_write_nested(&EXT4_I(second)->i_data_sem, I_DATA_SEM_OTHER);
} else {
down_write(&EXT4_I(second)->i_data_sem);
- down_write_nested(&EXT4_I(first)->i_data_sem, SINGLE_DEPTH_NESTING);
+ down_write_nested(&EXT4_I(first)->i_data_sem, I_DATA_SEM_OTHER);
}
}
@@ -156,7 +156,7 @@ mext_page_double_lock(struct inode *inode1, struct inode *inode2,
page[1] = grab_cache_page_write_begin(mapping[1], index2, fl);
if (!page[1]) {
unlock_page(page[0]);
- page_cache_release(page[0]);
+ put_page(page[0]);
return -ENOMEM;
}
/*
@@ -192,7 +192,7 @@ mext_page_mkuptodate(struct page *page, unsigned from, unsigned to)
create_empty_buffers(page, blocksize, 0);
head = page_buffers(page);
- block = (sector_t)page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
+ block = (sector_t)page->index << (PAGE_SHIFT - inode->i_blkbits);
for (bh = head, block_start = 0; bh != head || !block_start;
block++, block_start = block_end, bh = bh->b_this_page) {
block_end = block_start + blocksize;
@@ -268,7 +268,7 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode,
int i, err2, jblocks, retries = 0;
int replaced_count = 0;
int from = data_offset_in_page << orig_inode->i_blkbits;
- int blocks_per_page = PAGE_CACHE_SIZE >> orig_inode->i_blkbits;
+ int blocks_per_page = PAGE_SIZE >> orig_inode->i_blkbits;
struct super_block *sb = orig_inode->i_sb;
struct buffer_head *bh = NULL;
@@ -404,9 +404,9 @@ data_copy:
unlock_pages:
unlock_page(pagep[0]);
- page_cache_release(pagep[0]);
+ put_page(pagep[0]);
unlock_page(pagep[1]);
- page_cache_release(pagep[1]);
+ put_page(pagep[1]);
stop_journal:
ext4_journal_stop(handle);
if (*err == -ENOSPC &&
@@ -484,6 +484,13 @@ mext_check_arguments(struct inode *orig_inode,
return -EBUSY;
}
+ if (IS_NOQUOTA(orig_inode) || IS_NOQUOTA(donor_inode)) {
+ ext4_debug("ext4 move extent: The argument files should "
+ "not be quota files [ino:orig %lu, donor %lu]\n",
+ orig_inode->i_ino, donor_inode->i_ino);
+ return -EBUSY;
+ }
+
/* Ext4 move extent supports only extent based file */
if (!(ext4_test_inode_flag(orig_inode, EXT4_INODE_EXTENTS))) {
ext4_debug("ext4 move extent: orig file is not extents "
@@ -554,7 +561,7 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 orig_blk,
struct inode *orig_inode = file_inode(o_filp);
struct inode *donor_inode = file_inode(d_filp);
struct ext4_ext_path *path = NULL;
- int blocks_per_page = PAGE_CACHE_SIZE >> orig_inode->i_blkbits;
+ int blocks_per_page = PAGE_SIZE >> orig_inode->i_blkbits;
ext4_lblk_t o_end, o_start = orig_blk;
ext4_lblk_t d_start = donor_blk;
int ret;
@@ -648,9 +655,9 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 orig_blk,
if (o_end - o_start < cur_len)
cur_len = o_end - o_start;
- orig_page_index = o_start >> (PAGE_CACHE_SHIFT -
+ orig_page_index = o_start >> (PAGE_SHIFT -
orig_inode->i_blkbits);
- donor_page_index = d_start >> (PAGE_CACHE_SHIFT -
+ donor_page_index = d_start >> (PAGE_SHIFT -
donor_inode->i_blkbits);
offset_in_page = o_start % blocks_per_page;
if (cur_len > blocks_per_page- offset_in_page)
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index d77d15f4b674..e4fc8ea45d78 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -23,6 +23,7 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mm.h>
+#include <linux/backing-dev.h>
#include "ext4_jbd2.h"
#include "xattr.h"
@@ -432,8 +433,8 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
* the page size, the remaining memory is zeroed when mapped, and
* writes to that region are not written out to the file."
*/
- if (len < PAGE_CACHE_SIZE)
- zero_user_segment(page, len, PAGE_CACHE_SIZE);
+ if (len < PAGE_SIZE)
+ zero_user_segment(page, len, PAGE_SIZE);
/*
* In the first loop we prepare and mark buffers to submit. We have to
* mark all buffers in the page before submitting so that
@@ -470,9 +471,20 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode) &&
nr_to_submit) {
- data_page = ext4_encrypt(inode, page);
+ gfp_t gfp_flags = GFP_NOFS;
+
+ retry_encrypt:
+ data_page = ext4_encrypt(inode, page, gfp_flags);
if (IS_ERR(data_page)) {
ret = PTR_ERR(data_page);
+ if (ret == -ENOMEM && wbc->sync_mode == WB_SYNC_ALL) {
+ if (io->io_bio) {
+ ext4_io_submit(io);
+ congestion_wait(BLK_RW_ASYNC, HZ/50);
+ }
+ gfp_flags |= __GFP_NOFAIL;
+ goto retry_encrypt;
+ }
data_page = NULL;
goto out;
}
diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c
index 5dc5e95063de..dc54a4b60eba 100644
--- a/fs/ext4/readpage.c
+++ b/fs/ext4/readpage.c
@@ -23,7 +23,7 @@
*
* then this code just gives up and calls the buffer_head-based read function.
* It does handle a page which has holes at the end - that is a common case:
- * the end-of-file on blocksize < PAGE_CACHE_SIZE setups.
+ * the end-of-file on blocksize < PAGE_SIZE setups.
*
*/
@@ -140,7 +140,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
struct inode *inode = mapping->host;
const unsigned blkbits = inode->i_blkbits;
- const unsigned blocks_per_page = PAGE_CACHE_SIZE >> blkbits;
+ const unsigned blocks_per_page = PAGE_SIZE >> blkbits;
const unsigned blocksize = 1 << blkbits;
sector_t block_in_file;
sector_t last_block;
@@ -173,7 +173,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
if (page_has_buffers(page))
goto confused;
- block_in_file = (sector_t)page->index << (PAGE_CACHE_SHIFT - blkbits);
+ block_in_file = (sector_t)page->index << (PAGE_SHIFT - blkbits);
last_block = block_in_file + nr_pages * blocks_per_page;
last_block_in_file = (i_size_read(inode) + blocksize - 1) >> blkbits;
if (last_block > last_block_in_file)
@@ -217,7 +217,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
set_error_page:
SetPageError(page);
zero_user_segment(page, 0,
- PAGE_CACHE_SIZE);
+ PAGE_SIZE);
unlock_page(page);
goto next_page;
}
@@ -250,7 +250,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
}
if (first_hole != blocks_per_page) {
zero_user_segment(page, first_hole << blkbits,
- PAGE_CACHE_SIZE);
+ PAGE_SIZE);
if (first_hole == 0) {
SetPageUptodate(page);
unlock_page(page);
@@ -279,7 +279,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
if (ext4_encrypted_inode(inode) &&
S_ISREG(inode->i_mode)) {
- ctx = ext4_get_crypto_ctx(inode);
+ ctx = ext4_get_crypto_ctx(inode, GFP_NOFS);
if (IS_ERR(ctx))
goto set_error_page;
}
@@ -319,7 +319,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
unlock_page(page);
next_page:
if (pages)
- page_cache_release(page);
+ put_page(page);
}
BUG_ON(pages && !list_empty(pages));
if (bio)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 539297515896..304c712dbe12 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1113,6 +1113,7 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
unsigned int flags);
static int ext4_enable_quotas(struct super_block *sb);
+static int ext4_get_next_id(struct super_block *sb, struct kqid *qid);
static struct dquot **ext4_get_dquots(struct inode *inode)
{
@@ -1129,7 +1130,7 @@ static const struct dquot_operations ext4_quota_operations = {
.alloc_dquot = dquot_alloc,
.destroy_dquot = dquot_destroy,
.get_projid = ext4_get_projid,
- .get_next_id = dquot_get_next_id,
+ .get_next_id = ext4_get_next_id,
};
static const struct quotactl_ops ext4_qctl_operations = {
@@ -1323,9 +1324,9 @@ static int set_qf_name(struct super_block *sb, int qtype, substring_t *args)
return -1;
}
if (ext4_has_feature_quota(sb)) {
- ext4_msg(sb, KERN_ERR, "Cannot set journaled quota options "
- "when QUOTA feature is enabled");
- return -1;
+ ext4_msg(sb, KERN_INFO, "Journaled quota options "
+ "ignored when QUOTA feature is enabled");
+ return 1;
}
qname = match_strdup(args);
if (!qname) {
@@ -1688,10 +1689,10 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
return -1;
}
if (ext4_has_feature_quota(sb)) {
- ext4_msg(sb, KERN_ERR,
- "Cannot set journaled quota options "
+ ext4_msg(sb, KERN_INFO,
+ "Quota format mount options ignored "
"when QUOTA feature is enabled");
- return -1;
+ return 1;
}
sbi->s_jquota_fmt = m->mount_opt;
#endif
@@ -1756,11 +1757,11 @@ static int parse_options(char *options, struct super_block *sb,
#ifdef CONFIG_QUOTA
if (ext4_has_feature_quota(sb) &&
(test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) {
- ext4_msg(sb, KERN_ERR, "Cannot set quota options when QUOTA "
- "feature is enabled");
- return 0;
- }
- if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
+ ext4_msg(sb, KERN_INFO, "Quota feature enabled, usrquota and grpquota "
+ "mount options ignored.");
+ clear_opt(sb, USRQUOTA);
+ clear_opt(sb, GRPQUOTA);
+ } else if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
clear_opt(sb, USRQUOTA);
@@ -1784,7 +1785,7 @@ static int parse_options(char *options, struct super_block *sb,
int blocksize =
BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size);
- if (blocksize < PAGE_CACHE_SIZE) {
+ if (blocksize < PAGE_SIZE) {
ext4_msg(sb, KERN_ERR, "can't mount with "
"dioread_nolock if block size != PAGE_SIZE");
return 0;
@@ -3808,7 +3809,7 @@ no_journal:
}
if ((DUMMY_ENCRYPTION_ENABLED(sbi) || ext4_has_feature_encrypt(sb)) &&
- (blocksize != PAGE_CACHE_SIZE)) {
+ (blocksize != PAGE_SIZE)) {
ext4_msg(sb, KERN_ERR,
"Unsupported blocksize for fs encryption");
goto failed_mount_wq;
@@ -5028,6 +5029,20 @@ static int ext4_quota_on_mount(struct super_block *sb, int type)
EXT4_SB(sb)->s_jquota_fmt, type);
}
+static void lockdep_set_quota_inode(struct inode *inode, int subclass)
+{
+ struct ext4_inode_info *ei = EXT4_I(inode);
+
+ /* The first argument of lockdep_set_subclass has to be
+ * *exactly* the same as the argument to init_rwsem() --- in
+ * this case, in init_once() --- or lockdep gets unhappy
+ * because the name of the lock is set using the
+ * stringification of the argument to init_rwsem().
+ */
+ (void) ei; /* shut up clang warning if !CONFIG_LOCKDEP */
+ lockdep_set_subclass(&ei->i_data_sem, subclass);
+}
+
/*
* Standard function to be called on quota_on
*/
@@ -5067,8 +5082,12 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
if (err)
return err;
}
-
- return dquot_quota_on(sb, type, format_id, path);
+ lockdep_set_quota_inode(path->dentry->d_inode, I_DATA_SEM_QUOTA);
+ err = dquot_quota_on(sb, type, format_id, path);
+ if (err)
+ lockdep_set_quota_inode(path->dentry->d_inode,
+ I_DATA_SEM_NORMAL);
+ return err;
}
static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
@@ -5095,8 +5114,11 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
/* Don't account quota for quota files to avoid recursion */
qf_inode->i_flags |= S_NOQUOTA;
+ lockdep_set_quota_inode(qf_inode, I_DATA_SEM_QUOTA);
err = dquot_enable(qf_inode, type, format_id, flags);
iput(qf_inode);
+ if (err)
+ lockdep_set_quota_inode(qf_inode, I_DATA_SEM_NORMAL);
return err;
}
@@ -5253,6 +5275,17 @@ out:
return len;
}
+static int ext4_get_next_id(struct super_block *sb, struct kqid *qid)
+{
+ const struct quota_format_ops *ops;
+
+ if (!sb_has_quota_loaded(sb, qid->type))
+ return -ESRCH;
+ ops = sb_dqopt(sb)->ops[qid->type];
+ if (!ops || !ops->get_next_id)
+ return -ENOSYS;
+ return dquot_get_next_id(sb, qid);
+}
#endif
static struct dentry *ext4_mount(struct file_system_type *fs_type, int flags,
diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index 6f7ee30a89ce..75ed5c2f0c16 100644
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -80,12 +80,12 @@ static const char *ext4_encrypted_get_link(struct dentry *dentry,
if (res <= plen)
paddr[res] = '\0';
if (cpage)
- page_cache_release(cpage);
+ put_page(cpage);
set_delayed_call(done, kfree_link, paddr);
return paddr;
errout:
if (cpage)
- page_cache_release(cpage);
+ put_page(cpage);
kfree(paddr);
return ERR_PTR(res);
}
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 0441e055c8e8..e79bd32b9b79 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -230,6 +230,27 @@ ext4_xattr_check_block(struct inode *inode, struct buffer_head *bh)
return error;
}
+static int
+__xattr_check_inode(struct inode *inode, struct ext4_xattr_ibody_header *header,
+ void *end, const char *function, unsigned int line)
+{
+ struct ext4_xattr_entry *entry = IFIRST(header);
+ int error = -EFSCORRUPTED;
+
+ if (((void *) header >= end) ||
+ (header->h_magic != le32_to_cpu(EXT4_XATTR_MAGIC)))
+ goto errout;
+ error = ext4_xattr_check_names(entry, end, entry);
+errout:
+ if (error)
+ __ext4_error_inode(inode, function, line, 0,
+ "corrupted in-inode xattr");
+ return error;
+}
+
+#define xattr_check_inode(inode, header, end) \
+ __xattr_check_inode((inode), (header), (end), __func__, __LINE__)
+
static inline int
ext4_xattr_check_entry(struct ext4_xattr_entry *entry, size_t size)
{
@@ -341,7 +362,7 @@ ext4_xattr_ibody_get(struct inode *inode, int name_index, const char *name,
header = IHDR(inode, raw_inode);
entry = IFIRST(header);
end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;
- error = ext4_xattr_check_names(entry, end, entry);
+ error = xattr_check_inode(inode, header, end);
if (error)
goto cleanup;
error = ext4_xattr_find_entry(&entry, name_index, name,
@@ -477,7 +498,7 @@ ext4_xattr_ibody_list(struct dentry *dentry, char *buffer, size_t buffer_size)
raw_inode = ext4_raw_inode(&iloc);
header = IHDR(inode, raw_inode);
end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;
- error = ext4_xattr_check_names(IFIRST(header), end, IFIRST(header));
+ error = xattr_check_inode(inode, header, end);
if (error)
goto cleanup;
error = ext4_xattr_list_entries(dentry, IFIRST(header),
@@ -1040,8 +1061,7 @@ int ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
is->s.here = is->s.first;
is->s.end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;
if (ext4_test_inode_state(inode, EXT4_STATE_XATTR)) {
- error = ext4_xattr_check_names(IFIRST(header), is->s.end,
- IFIRST(header));
+ error = xattr_check_inode(inode, header, is->s.end);
if (error)
return error;
/* Find the named attribute. */
@@ -1356,6 +1376,10 @@ retry:
last = entry;
total_ino = sizeof(struct ext4_xattr_ibody_header);
+ error = xattr_check_inode(inode, header, end);
+ if (error)
+ goto cleanup;
+
free = ext4_xattr_free_space(last, &min_offs, base, &total_ino);
if (free >= new_extra_isize) {
entry = IFIRST(header);