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>
This commit is contained in:
Theodore Ts'o
Родитель
64044abf05
Коммит
95eaefbdec
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@ -325,7 +325,7 @@ ext4_acl_chmod(struct inode *inode)
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return error;
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retry:
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handle = ext4_journal_start(inode, EXT4_HT_XATTR,
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EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
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ext4_jbd2_credits_xattr(inode));
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if (IS_ERR(handle)) {
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error = PTR_ERR(handle);
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ext4_std_error(inode->i_sb, error);
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@ -423,7 +423,7 @@ ext4_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
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retry:
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handle = ext4_journal_start(inode, EXT4_HT_XATTR,
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EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
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ext4_jbd2_credits_xattr(inode));
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if (IS_ERR(handle)) {
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error = PTR_ERR(handle);
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goto release_and_out;
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@ -2456,6 +2456,75 @@ extern const struct file_operations ext4_file_operations;
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extern loff_t ext4_llseek(struct file *file, loff_t offset, int origin);
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extern void ext4_unwritten_wait(struct inode *inode);
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/* inline.c */
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extern int ext4_has_inline_data(struct inode *inode);
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extern int ext4_get_inline_size(struct inode *inode);
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extern int ext4_get_max_inline_size(struct inode *inode);
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extern int ext4_find_inline_data_nolock(struct inode *inode);
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extern void ext4_write_inline_data(struct inode *inode,
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struct ext4_iloc *iloc,
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void *buffer, loff_t pos,
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unsigned int len);
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extern int ext4_prepare_inline_data(handle_t *handle, struct inode *inode,
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unsigned int len);
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extern int ext4_init_inline_data(handle_t *handle, struct inode *inode,
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unsigned int len);
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extern int ext4_destroy_inline_data(handle_t *handle, struct inode *inode);
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extern int ext4_readpage_inline(struct inode *inode, struct page *page);
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extern int ext4_try_to_write_inline_data(struct address_space *mapping,
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struct inode *inode,
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loff_t pos, unsigned len,
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unsigned flags,
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struct page **pagep);
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extern int ext4_write_inline_data_end(struct inode *inode,
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loff_t pos, unsigned len,
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unsigned copied,
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struct page *page);
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extern struct buffer_head *
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ext4_journalled_write_inline_data(struct inode *inode,
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unsigned len,
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struct page *page);
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extern int ext4_da_write_inline_data_begin(struct address_space *mapping,
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struct inode *inode,
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loff_t pos, unsigned len,
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unsigned flags,
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struct page **pagep,
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void **fsdata);
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extern int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
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unsigned len, unsigned copied,
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struct page *page);
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extern int ext4_try_add_inline_entry(handle_t *handle, struct dentry *dentry,
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struct inode *inode);
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extern int ext4_try_create_inline_dir(handle_t *handle,
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struct inode *parent,
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struct inode *inode);
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extern int ext4_read_inline_dir(struct file *filp,
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void *dirent, filldir_t filldir,
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int *has_inline_data);
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extern struct buffer_head *ext4_find_inline_entry(struct inode *dir,
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const struct qstr *d_name,
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struct ext4_dir_entry_2 **res_dir,
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int *has_inline_data);
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extern int ext4_delete_inline_entry(handle_t *handle,
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struct inode *dir,
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struct ext4_dir_entry_2 *de_del,
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struct buffer_head *bh,
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int *has_inline_data);
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extern int empty_inline_dir(struct inode *dir, int *has_inline_data);
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extern struct buffer_head *ext4_get_first_inline_block(struct inode *inode,
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struct ext4_dir_entry_2 **parent_de,
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int *retval);
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extern int ext4_inline_data_fiemap(struct inode *inode,
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struct fiemap_extent_info *fieinfo,
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int *has_inline);
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extern int ext4_try_to_evict_inline_data(handle_t *handle,
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struct inode *inode,
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int needed);
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extern void ext4_inline_data_truncate(struct inode *inode, int *has_inline);
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extern int ext4_convert_inline_data(struct inode *inode);
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/* namei.c */
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extern const struct inode_operations ext4_dir_inode_operations;
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extern const struct inode_operations ext4_special_inode_operations;
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@ -104,6 +104,20 @@
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#define EXT4_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_INIT_BLOCKS(sb))
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#define EXT4_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_DEL_BLOCKS(sb))
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static inline int ext4_jbd2_credits_xattr(struct inode *inode)
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{
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int credits = EXT4_DATA_TRANS_BLOCKS(inode->i_sb);
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/*
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* In case of inline data, we may push out the data to a block,
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* so we need to reserve credits for this eventuality
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*/
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if (ext4_has_inline_data(inode))
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credits += ext4_writepage_trans_blocks(inode) + 1;
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return credits;
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}
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/*
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* Ext4 handle operation types -- for logging purposes
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*/
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@ -1165,16 +1165,9 @@ ext4_xattr_set(struct inode *inode, int name_index, const char *name,
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{
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handle_t *handle;
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int error, retries = 0;
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int credits = EXT4_DATA_TRANS_BLOCKS(inode->i_sb);
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int credits = ext4_jbd2_credits_xattr(inode);
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retry:
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/*
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* In case of inline data, we may push out the data to a block,
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* So reserve the journal space first.
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*/
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if (ext4_has_inline_data(inode))
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credits += ext4_writepage_trans_blocks(inode) + 1;
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handle = ext4_journal_start(inode, EXT4_HT_XATTR, credits);
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if (IS_ERR(handle)) {
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error = PTR_ERR(handle);
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@ -125,74 +125,6 @@ extern int ext4_xattr_ibody_inline_set(handle_t *handle, struct inode *inode,
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struct ext4_xattr_info *i,
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struct ext4_xattr_ibody_find *is);
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extern int ext4_has_inline_data(struct inode *inode);
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extern int ext4_get_inline_size(struct inode *inode);
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extern int ext4_get_max_inline_size(struct inode *inode);
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extern int ext4_find_inline_data_nolock(struct inode *inode);
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extern void ext4_write_inline_data(struct inode *inode,
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struct ext4_iloc *iloc,
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void *buffer, loff_t pos,
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unsigned int len);
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extern int ext4_prepare_inline_data(handle_t *handle, struct inode *inode,
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unsigned int len);
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extern int ext4_init_inline_data(handle_t *handle, struct inode *inode,
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unsigned int len);
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extern int ext4_destroy_inline_data(handle_t *handle, struct inode *inode);
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extern int ext4_readpage_inline(struct inode *inode, struct page *page);
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extern int ext4_try_to_write_inline_data(struct address_space *mapping,
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struct inode *inode,
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loff_t pos, unsigned len,
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unsigned flags,
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struct page **pagep);
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extern int ext4_write_inline_data_end(struct inode *inode,
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loff_t pos, unsigned len,
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unsigned copied,
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struct page *page);
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extern struct buffer_head *
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ext4_journalled_write_inline_data(struct inode *inode,
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unsigned len,
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struct page *page);
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extern int ext4_da_write_inline_data_begin(struct address_space *mapping,
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struct inode *inode,
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loff_t pos, unsigned len,
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unsigned flags,
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struct page **pagep,
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void **fsdata);
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extern int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
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unsigned len, unsigned copied,
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struct page *page);
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extern int ext4_try_add_inline_entry(handle_t *handle, struct dentry *dentry,
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struct inode *inode);
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extern int ext4_try_create_inline_dir(handle_t *handle,
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struct inode *parent,
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struct inode *inode);
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extern int ext4_read_inline_dir(struct file *filp,
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void *dirent, filldir_t filldir,
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int *has_inline_data);
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extern struct buffer_head *ext4_find_inline_entry(struct inode *dir,
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const struct qstr *d_name,
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struct ext4_dir_entry_2 **res_dir,
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int *has_inline_data);
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extern int ext4_delete_inline_entry(handle_t *handle,
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struct inode *dir,
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struct ext4_dir_entry_2 *de_del,
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struct buffer_head *bh,
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int *has_inline_data);
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extern int empty_inline_dir(struct inode *dir, int *has_inline_data);
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extern struct buffer_head *ext4_get_first_inline_block(struct inode *inode,
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struct ext4_dir_entry_2 **parent_de,
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int *retval);
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extern int ext4_inline_data_fiemap(struct inode *inode,
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struct fiemap_extent_info *fieinfo,
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int *has_inline);
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extern int ext4_try_to_evict_inline_data(handle_t *handle,
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struct inode *inode,
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int needed);
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extern void ext4_inline_data_truncate(struct inode *inode, int *has_inline);
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extern int ext4_convert_inline_data(struct inode *inode);
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#ifdef CONFIG_EXT4_FS_SECURITY
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extern int ext4_init_security(handle_t *handle, struct inode *inode,
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struct inode *dir, const struct qstr *qstr);
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