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f2fs: fix to report newly allocate region as extent

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Previous get_block in f2fs didn't report the newly allocated region which has
NEW_ADDR.
For reader, it should not report, but fiemap needs this.
So, this patch introduces two get_block sharing core function.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2014-06-13 13:02:11 +09:00
parent a497c3ba1d
commit ccfb30001f
1 changed files with 18 additions and 5 deletions
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23
fs/f2fs/data.c
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@ -608,8 +608,8 @@ static int __allocate_data_block(struct dnode_of_data *dn)
* b. do not use extent cache for better performance
* c. give the block addresses to blockdev
*/
static int get_data_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
static int __get_data_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create, bool fiemap)
{
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
unsigned int blkbits = inode->i_sb->s_blocksize_bits;
@ -637,7 +637,7 @@ static int get_data_block(struct inode *inode, sector_t iblock,
err = 0;
goto unlock_out;
}
if (dn.data_blkaddr == NEW_ADDR)
if (dn.data_blkaddr == NEW_ADDR && !fiemap)
goto put_out;
if (dn.data_blkaddr != NULL_ADDR) {
@ -671,7 +671,7 @@ get_next:
err = 0;
goto unlock_out;
}
if (dn.data_blkaddr == NEW_ADDR)
if (dn.data_blkaddr == NEW_ADDR && !fiemap)
goto put_out;
end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode));
@ -708,10 +708,23 @@ out:
return err;
}
static int get_data_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
return __get_data_block(inode, iblock, bh_result, create, false);
}
static int get_data_block_fiemap(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
return __get_data_block(inode, iblock, bh_result, create, true);
}
int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len)
{
return generic_block_fiemap(inode, fieinfo, start, len, get_data_block);
return generic_block_fiemap(inode, fieinfo,
start, len, get_data_block_fiemap);
}
static int f2fs_read_data_page(struct file *file, struct page *page)