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authorTao Ma <boyu.mt@taobao.com>2012-12-10 14:06:03 -0500
committerTheodore Ts'o <tytso@mit.edu>2012-12-10 14:06:03 -0500
commit0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf (patch)
tree7db57d3b2926408bda5bad880896ee4ec384f398 /fs/ext4
parentaef1c8513c1f8ae076e22ea2a57eff5835578e75 (diff)
ext4: let fallocate handle inline data correctly
If we are punching hole in a file, we will return ENOTSUPP. As for the fallocation of some extents, we will convert the inline data to a normal extent based file first. Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/extents.c4
-rw-r--r--fs/ext4/inline.c39
-rw-r--r--fs/ext4/xattr.h5
3 files changed, 48 insertions, 0 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 70dc6fc53a0..d45ff3faefc 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4399,6 +4399,10 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
if (mode & FALLOC_FL_PUNCH_HOLE)
return ext4_punch_hole(file, offset, len);
+ ret = ext4_convert_inline_data(inode);
+ if (ret)
+ return ret;
+
trace_ext4_fallocate_enter(inode, offset, len, mode);
map.m_lblk = offset >> blkbits;
/*
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index 727edb8d57e..53b2f65091d 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -1843,3 +1843,42 @@ out:
ext4_journal_stop(handle);
return;
}
+
+int ext4_convert_inline_data(struct inode *inode)
+{
+ int error, needed_blocks;
+ handle_t *handle;
+ struct ext4_iloc iloc;
+
+ if (!ext4_has_inline_data(inode)) {
+ ext4_clear_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA);
+ return 0;
+ }
+
+ needed_blocks = ext4_writepage_trans_blocks(inode);
+
+ iloc.bh = NULL;
+ error = ext4_get_inode_loc(inode, &iloc);
+ if (error)
+ return error;
+
+ handle = ext4_journal_start(inode, needed_blocks);
+ if (IS_ERR(handle)) {
+ error = PTR_ERR(handle);
+ goto out_free;
+ }
+
+ down_write(&EXT4_I(inode)->xattr_sem);
+ if (!ext4_has_inline_data(inode)) {
+ up_write(&EXT4_I(inode)->xattr_sem);
+ goto out;
+ }
+
+ error = ext4_convert_inline_data_nolock(handle, inode, &iloc);
+ up_write(&EXT4_I(inode)->xattr_sem);
+out:
+ ext4_journal_stop(handle);
+out_free:
+ brelse(iloc.bh);
+ return error;
+}
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 1a71a97e14a..4222388c772 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -192,6 +192,7 @@ extern int ext4_try_to_evict_inline_data(handle_t *handle,
int needed);
extern void ext4_inline_data_truncate(struct inode *inode, int *has_inline);
+extern int ext4_convert_inline_data(struct inode *inode);
# else /* CONFIG_EXT4_FS_XATTR */
static inline int
@@ -420,6 +421,10 @@ static inline void ext4_inline_data_truncate(struct inode *inode,
return;
}
+static inline int ext4_convert_inline_data(struct inode *inode)
+{
+ return 0;
+}
# endif /* CONFIG_EXT4_FS_XATTR */
#ifdef CONFIG_EXT4_FS_SECURITY