diff options
| author | Dave Chinner <dchinner@redhat.com> | 2020-12-09 10:05:16 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-12-12 10:48:25 -0800 |
| commit | 8d822dc38ad781b1bfa5c03227da80dbd87e9959 (patch) | |
| tree | 1f0b1258241bbd07d19eaa546e126b149f7e89b4 /fs/xfs/libxfs/xfs_ialloc.h | |
| parent | f3bf6e0f1196c69a7b0412521596cd1cc7622a82 (diff) | |
xfs: spilt xfs_dialloc() into 2 functions
This patch explicitly separates free inode chunk allocation and
inode allocation into two individual high level operations.
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_ialloc.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_ialloc.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/fs/xfs/libxfs/xfs_ialloc.h b/fs/xfs/libxfs/xfs_ialloc.h index 13810ffe4af9..3511086a7ae1 100644 --- a/fs/xfs/libxfs/xfs_ialloc.h +++ b/fs/xfs/libxfs/xfs_ialloc.h @@ -37,16 +37,26 @@ xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o) * Mode is used to tell whether the new inode will need space, and whether * it is a directory. * - * Once we successfully pick an inode its number is returned and the - * on-disk data structures are updated. The inode itself is not read - * in, since doing so would break ordering constraints with xfs_reclaim. + * There are two phases to inode allocation: selecting an AG and ensuring + * that it contains free inodes, followed by allocating one of the free + * inodes. xfs_dialloc_select_ag() does the former and returns a locked AGI + * to the caller, ensuring that followup call to xfs_dialloc_ag() will + * have free inodes to allocate from. xfs_dialloc_ag() will return the inode + * number of the free inode we allocated. */ int /* error */ -xfs_dialloc( +xfs_dialloc_select_ag( struct xfs_trans **tpp, /* double pointer of transaction */ xfs_ino_t parent, /* parent inode (directory) */ umode_t mode, /* mode bits for new inode */ - xfs_ino_t *inop); /* inode number allocated */ + struct xfs_buf **IO_agbp); + +int +xfs_dialloc_ag( + struct xfs_trans *tp, + struct xfs_buf *agbp, + xfs_ino_t parent, + xfs_ino_t *inop); /* * Free disk inode. Carefully avoids touching the incore inode, all |