From: Tao Ma <boyu.mt@xxxxxxxxxx>
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@xxxxxxxxxx>
---
fs/ext4/extents.c | 4 ++++
fs/ext4/inline.c | 39 +++++++++++++++++++++++++++++++++++++++
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 e6089be..87432bc 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4367,6 +4367,10 @@ 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 e77639c..3337e71 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -1786,3 +1786,42 @@ 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 58abcc9..98f22c6 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -191,6 +191,7 @@ 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
@@ -415,6 +416,10 @@ static inline void ext4_inline_data_truncate(struct inode *inode,
return;
}
+static int int ext4_convert_inline_data(struct inode *inode)
+{
+ return 0;
+}
# endif /* CONFIG_EXT4_FS_XATTR */
#ifdef CONFIG_EXT4_FS_SECURITY
--
1.7.0.4
--
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