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authorTheodore Ts'o <tytso@mit.edu>2013-02-09 21:23:03 +0100
committerTheodore Ts'o <tytso@mit.edu>2013-02-09 21:23:03 +0100
commit95eaefbdececae5e781d76d03fe7472a857c8c7a (patch)
treeabe337e1490ded4166cf4d26f97cd1fe856a84ab /fs
parentext4: fix the number of credits needed for ext4_unlink() and ext4_rmdir() (diff)
downloadlinux-95eaefbdececae5e781d76d03fe7472a857c8c7a.tar.xz
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ext4: fix the number of credits needed for acl ops with inline data
Operations which modify extended attributes may need extra journal credits if inline data is used, since there is a chance that some extended attributes may need to get pushed to an external attribute block. Changes to reflect this was made in xattr.c, but they were missed in fs/ext4/acl.c. To fix this, abstract the calculation of the number of credits needed for xattr operations to an inline function defined in ext4_jbd2.h, and use it in acl.c and xattr.c. Also move the function declarations used in inline.c from xattr.h (where they are non-obviously hidden, and caused problems since ext4_jbd2.h needs to use the function ext4_has_inline_data), and move them to ext4.h. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Tao Ma <boyu.mt@taobao.com> Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs')
-rw-r--r--fs/ext4/acl.c4
-rw-r--r--fs/ext4/ext4.h69
-rw-r--r--fs/ext4/ext4_jbd2.h14
-rw-r--r--fs/ext4/xattr.c9
-rw-r--r--fs/ext4/xattr.h68
5 files changed, 86 insertions, 78 deletions
diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
index 406cf8bb12d5..39a54a0e9fe4 100644
--- a/fs/ext4/acl.c
+++ b/fs/ext4/acl.c
@@ -325,7 +325,7 @@ ext4_acl_chmod(struct inode *inode)
return error;
retry:
handle = ext4_journal_start(inode, EXT4_HT_XATTR,
- EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
+ ext4_jbd2_credits_xattr(inode));
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
ext4_std_error(inode->i_sb, error);
@@ -423,7 +423,7 @@ ext4_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
retry:
handle = ext4_journal_start(inode, EXT4_HT_XATTR,
- EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
+ ext4_jbd2_credits_xattr(inode));
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
goto release_and_out;
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index a5ae87c51401..61ecf059f70c 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2456,6 +2456,75 @@ extern const struct file_operations ext4_file_operations;
extern loff_t ext4_llseek(struct file *file, loff_t offset, int origin);
extern void ext4_unwritten_wait(struct inode *inode);
+/* inline.c */
+extern int ext4_has_inline_data(struct inode *inode);
+extern int ext4_get_inline_size(struct inode *inode);
+extern int ext4_get_max_inline_size(struct inode *inode);
+extern int ext4_find_inline_data_nolock(struct inode *inode);
+extern void ext4_write_inline_data(struct inode *inode,
+ struct ext4_iloc *iloc,
+ void *buffer, loff_t pos,
+ unsigned int len);
+extern int ext4_prepare_inline_data(handle_t *handle, struct inode *inode,
+ unsigned int len);
+extern int ext4_init_inline_data(handle_t *handle, struct inode *inode,
+ unsigned int len);
+extern int ext4_destroy_inline_data(handle_t *handle, struct inode *inode);
+
+extern int ext4_readpage_inline(struct inode *inode, struct page *page);
+extern int ext4_try_to_write_inline_data(struct address_space *mapping,
+ struct inode *inode,
+ loff_t pos, unsigned len,
+ unsigned flags,
+ struct page **pagep);
+extern int ext4_write_inline_data_end(struct inode *inode,
+ loff_t pos, unsigned len,
+ unsigned copied,
+ struct page *page);
+extern struct buffer_head *
+ext4_journalled_write_inline_data(struct inode *inode,
+ unsigned len,
+ struct page *page);
+extern int ext4_da_write_inline_data_begin(struct address_space *mapping,
+ struct inode *inode,
+ loff_t pos, unsigned len,
+ unsigned flags,
+ struct page **pagep,
+ void **fsdata);
+extern int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
+ unsigned len, unsigned copied,
+ struct page *page);
+extern int ext4_try_add_inline_entry(handle_t *handle, struct dentry *dentry,
+ struct inode *inode);
+extern int ext4_try_create_inline_dir(handle_t *handle,
+ struct inode *parent,
+ struct inode *inode);
+extern int ext4_read_inline_dir(struct file *filp,
+ void *dirent, filldir_t filldir,
+ int *has_inline_data);
+extern struct buffer_head *ext4_find_inline_entry(struct inode *dir,
+ const struct qstr *d_name,
+ struct ext4_dir_entry_2 **res_dir,
+ int *has_inline_data);
+extern int ext4_delete_inline_entry(handle_t *handle,
+ struct inode *dir,
+ struct ext4_dir_entry_2 *de_del,
+ struct buffer_head *bh,
+ int *has_inline_data);
+extern int empty_inline_dir(struct inode *dir, int *has_inline_data);
+extern struct buffer_head *ext4_get_first_inline_block(struct inode *inode,
+ struct ext4_dir_entry_2 **parent_de,
+ int *retval);
+extern int ext4_inline_data_fiemap(struct inode *inode,
+ struct fiemap_extent_info *fieinfo,
+ int *has_inline);
+extern int ext4_try_to_evict_inline_data(handle_t *handle,
+ struct inode *inode,
+ int needed);
+extern void ext4_inline_data_truncate(struct inode *inode, int *has_inline);
+
+extern int ext4_convert_inline_data(struct inode *inode);
+
/* namei.c */
extern const struct inode_operations ext4_dir_inode_operations;
extern const struct inode_operations ext4_special_inode_operations;
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index c1fc2dca14ae..4c216b1bf20c 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -104,6 +104,20 @@
#define EXT4_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_INIT_BLOCKS(sb))
#define EXT4_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_DEL_BLOCKS(sb))
+static inline int ext4_jbd2_credits_xattr(struct inode *inode)
+{
+ int credits = EXT4_DATA_TRANS_BLOCKS(inode->i_sb);
+
+ /*
+ * In case of inline data, we may push out the data to a block,
+ * so we need to reserve credits for this eventuality
+ */
+ if (ext4_has_inline_data(inode))
+ credits += ext4_writepage_trans_blocks(inode) + 1;
+ return credits;
+}
+
+
/*
* Ext4 handle operation types -- for logging purposes
*/
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 2efc5600b03b..cc31da027596 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1165,16 +1165,9 @@ ext4_xattr_set(struct inode *inode, int name_index, const char *name,
{
handle_t *handle;
int error, retries = 0;
- int credits = EXT4_DATA_TRANS_BLOCKS(inode->i_sb);
+ int credits = ext4_jbd2_credits_xattr(inode);
retry:
- /*
- * In case of inline data, we may push out the data to a block,
- * So reserve the journal space first.
- */
- if (ext4_has_inline_data(inode))
- credits += ext4_writepage_trans_blocks(inode) + 1;
-
handle = ext4_journal_start(inode, EXT4_HT_XATTR, credits);
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 69eda787a96a..aa25deb5c6cd 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -125,74 +125,6 @@ extern int ext4_xattr_ibody_inline_set(handle_t *handle, struct inode *inode,
struct ext4_xattr_info *i,
struct ext4_xattr_ibody_find *is);
-extern int ext4_has_inline_data(struct inode *inode);
-extern int ext4_get_inline_size(struct inode *inode);
-extern int ext4_get_max_inline_size(struct inode *inode);
-extern int ext4_find_inline_data_nolock(struct inode *inode);
-extern void ext4_write_inline_data(struct inode *inode,
- struct ext4_iloc *iloc,
- void *buffer, loff_t pos,
- unsigned int len);
-extern int ext4_prepare_inline_data(handle_t *handle, struct inode *inode,
- unsigned int len);
-extern int ext4_init_inline_data(handle_t *handle, struct inode *inode,
- unsigned int len);
-extern int ext4_destroy_inline_data(handle_t *handle, struct inode *inode);
-
-extern int ext4_readpage_inline(struct inode *inode, struct page *page);
-extern int ext4_try_to_write_inline_data(struct address_space *mapping,
- struct inode *inode,
- loff_t pos, unsigned len,
- unsigned flags,
- struct page **pagep);
-extern int ext4_write_inline_data_end(struct inode *inode,
- loff_t pos, unsigned len,
- unsigned copied,
- struct page *page);
-extern struct buffer_head *
-ext4_journalled_write_inline_data(struct inode *inode,
- unsigned len,
- struct page *page);
-extern int ext4_da_write_inline_data_begin(struct address_space *mapping,
- struct inode *inode,
- loff_t pos, unsigned len,
- unsigned flags,
- struct page **pagep,
- void **fsdata);
-extern int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
- unsigned len, unsigned copied,
- struct page *page);
-extern int ext4_try_add_inline_entry(handle_t *handle, struct dentry *dentry,
- struct inode *inode);
-extern int ext4_try_create_inline_dir(handle_t *handle,
- struct inode *parent,
- struct inode *inode);
-extern int ext4_read_inline_dir(struct file *filp,
- void *dirent, filldir_t filldir,
- int *has_inline_data);
-extern struct buffer_head *ext4_find_inline_entry(struct inode *dir,
- const struct qstr *d_name,
- struct ext4_dir_entry_2 **res_dir,
- int *has_inline_data);
-extern int ext4_delete_inline_entry(handle_t *handle,
- struct inode *dir,
- struct ext4_dir_entry_2 *de_del,
- struct buffer_head *bh,
- int *has_inline_data);
-extern int empty_inline_dir(struct inode *dir, int *has_inline_data);
-extern struct buffer_head *ext4_get_first_inline_block(struct inode *inode,
- struct ext4_dir_entry_2 **parent_de,
- int *retval);
-extern int ext4_inline_data_fiemap(struct inode *inode,
- struct fiemap_extent_info *fieinfo,
- int *has_inline);
-extern int ext4_try_to_evict_inline_data(handle_t *handle,
- struct inode *inode,
- int needed);
-extern void ext4_inline_data_truncate(struct inode *inode, int *has_inline);
-
-extern int ext4_convert_inline_data(struct inode *inode);
-
#ifdef CONFIG_EXT4_FS_SECURITY
extern int ext4_init_security(handle_t *handle, struct inode *inode,
struct inode *dir, const struct qstr *qstr);