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| author | Tao Ma <boyu.mt@taobao.com> | 2012-12-10 14:06:03 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-12-10 14:06:03 -0500 |
| commit | 0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf (patch) | |
| tree | 7db57d3b2926408bda5bad880896ee4ec384f398 /fs/ext4 | |
| parent | aef1c8513c1f8ae076e22ea2a57eff5835578e75 (diff) | |
| download | op-kernel-dev-0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf.zip op-kernel-dev-0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf.tar.gz | |
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.c | 4 | ||||
| -rw-r--r-- | fs/ext4/inline.c | 39 | ||||
| -rw-r--r-- | fs/ext4/xattr.h | 5 |
3 files changed, 48 insertions, 0 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 70dc6fc..d45ff3f 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 727edb8..53b2f65 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 1a71a97..4222388 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 |
