From: Tao Ma <tm@tao.ma>
To: linux-ext4@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org
Subject: [PATCH V4 14/22] ext4: let ext4_find_entry handle inline data.
Date: Mon, 20 Feb 2012 15:01:48 +0800 [thread overview]
Message-ID: <1329721316-4955-14-git-send-email-tm@tao.ma> (raw)
In-Reply-To: <1329721316-4955-1-git-send-email-tm@tao.ma>
From: Tao Ma <boyu.mt@taobao.com>
Create a new ext4_find_inline_entry to handle the case
of inline data.
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
---
fs/ext4/inline.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
fs/ext4/namei.c | 10 +++++++++-
fs/ext4/xattr.h | 12 ++++++++++++
3 files changed, 68 insertions(+), 1 deletions(-)
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index e238b64..90e1671 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -1338,6 +1338,53 @@ out:
return ret;
}
+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)
+{
+ int ret;
+ struct ext4_iloc iloc;
+ void *inline_start;
+ int inline_size;
+
+ if (ext4_get_inode_loc(dir, &iloc))
+ return NULL;
+
+ down_read(&EXT4_I(dir)->xattr_sem);
+ if (!ext4_has_inline_data(dir)) {
+ *has_inline_data = 0;
+ goto out;
+ }
+
+ inline_start = ext4_raw_inode(&iloc)->i_block;
+ inline_size = EXT4_MIN_INLINE_DATA_SIZE;
+ ret = search_dir(iloc.bh, inline_start, inline_size,
+ dir, d_name, 0, res_dir);
+ if (ret == 1)
+ goto out_find;
+ if (ret < 0)
+ goto out;
+
+ if (ext4_get_inline_size(dir) == EXT4_MIN_INLINE_DATA_SIZE)
+ goto out;
+
+ inline_start = ext4_get_inline_xattr_pos(dir, &iloc);
+ inline_size = ext4_get_inline_size(dir) - EXT4_MIN_INLINE_DATA_SIZE;
+
+ ret = search_dir(iloc.bh, inline_start, inline_size,
+ dir, d_name, 0, res_dir);
+ if (ret == 1)
+ goto out_find;
+
+out:
+ brelse(iloc.bh);
+ iloc.bh = NULL;
+out_find:
+ up_read(&EXT4_I(dir)->xattr_sem);
+ return iloc.bh;
+}
+
int ext4_destroy_inline_data(handle_t *handle, struct inode *inode)
{
int ret;
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 7e74503..1de97f5 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -844,7 +844,6 @@ static inline int search_dirblock(struct buffer_head *bh,
d_name, offset, res_dir);
}
-
/*
* ext4_find_entry()
*
@@ -879,6 +878,15 @@ static struct buffer_head * ext4_find_entry (struct inode *dir,
namelen = d_name->len;
if (namelen > EXT4_NAME_LEN)
return NULL;
+
+ if (ext4_has_inline_data(dir)) {
+ int has_inline_data = 1;
+ ret = ext4_find_inline_entry(dir, d_name, res_dir,
+ &has_inline_data);
+ if (has_inline_data)
+ return ret;
+ }
+
if ((namelen <= 2) && (name[0] == '.') &&
(name[1] == '.' || name[1] == '\0')) {
/*
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 8092846..b86391f 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -168,6 +168,10 @@ extern int ext4_try_create_inline_dir(handle_t *handle,
struct inode *inode);
extern int ext4_read_inline_dir(struct file *filp,
void *dirent, filldir_t filldir);
+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);
# else /* CONFIG_EXT4_FS_XATTR */
static inline int
@@ -350,6 +354,14 @@ static inline int ext4_read_inline_dir(struct file *filp,
{
return 0;
}
+
+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)
+{
+ return NULL;
+}
# endif /* CONFIG_EXT4_FS_XATTR */
#ifdef CONFIG_EXT4_FS_SECURITY
--
1.7.0.4
next prev parent reply other threads:[~2012-02-20 7:08 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-20 7:00 [PATCH V4 00/22] ext4: Add inline data support Tao Ma
2012-02-20 7:01 ` [PATCH V4 01/22] ext4: Move extra inode read to a new function Tao Ma
2012-02-20 7:01 ` [PATCH V4 02/22] ext4: export inline xattr functions Tao Ma
2012-02-21 22:45 ` Andreas Dilger
2012-02-20 7:01 ` [PATCH V4 03/22] ext4: Add the basic function for inline data support Tao Ma
2012-04-07 0:21 ` Andreas Dilger
2012-04-13 2:59 ` Tao Ma
2012-02-20 7:01 ` [PATCH V4 04/22] ext4: Add read support for inline data Tao Ma
2012-02-20 7:01 ` [PATCH V4 05/22] ext4: Add normal write " Tao Ma
2012-02-20 7:01 ` [PATCH V4 06/22] ext4: Add journalled " Tao Ma
2012-02-20 7:01 ` [PATCH V4 07/22] ext4: Add delalloc " Tao Ma
2012-02-20 7:01 ` [PATCH V4 08/22] ext4: Create a new function ext4_init_new_dir Tao Ma
2012-02-20 7:01 ` [PATCH V4 09/22] ext4: Refactor __ext4_check_dir_entry to accepts start and size Tao Ma
2012-02-20 7:01 ` [PATCH V4 10/22] ext4: Create __ext4_insert_dentry for dir entry insertion Tao Ma
2012-02-20 7:01 ` [PATCH V4 11/22] ext4: let add_dir_entry handle inline data properly Tao Ma
2012-02-20 7:01 ` [PATCH V4 12/22] ext4: Let ext4_readdir handle inline data Tao Ma
2012-02-20 7:01 ` [PATCH V4 13/22] ext4: Create a new function search_dir Tao Ma
2012-02-20 7:01 ` Tao Ma [this message]
2012-02-20 7:01 ` [PATCH V4 15/22] ext4: make ext4_delete_entry generic Tao Ma
2012-02-20 7:01 ` [PATCH V4 16/22] ext4: let ext4_delete_entry handle inline data Tao Ma
2012-02-20 7:01 ` [PATCH V4 17/22] ext4: let empty_dir handle inline dir Tao Ma
2012-04-07 0:21 ` Andreas Dilger
2012-04-17 3:55 ` Tao Ma
2012-02-20 7:01 ` [PATCH V4 18/22] ext4: let ext4_rename " Tao Ma
2012-02-20 7:01 ` [PATCH V4 19/22] ext4: Let fiemap work with inline data Tao Ma
2012-02-20 7:01 ` [PATCH V4 20/22] ext4: Evict inline data out if we needs to strore xattr in inode Tao Ma
2012-02-20 7:01 ` [PATCH V4 21/22] ext4: let ext4_truncate handle inline data correctly Tao Ma
2012-02-20 7:01 ` [PATCH V4 22/22] ext4: Enable ext4 inline support Tao Ma
2012-02-21 6:51 ` [PATCH V4 01/22] ext4: Move extra inode read to a new function Andreas Dilger
2012-02-21 8:13 ` Tao Ma
2012-02-21 23:44 ` [PATCH V4 00/22] ext4: Add inline data support Andreas Dilger
2012-02-22 1:34 ` Tao Ma
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