From: Darrick J. Wong Date: Wed, 27 Jan 2021 00:33:29 +0000 (-0800) Subject: xfs: refactor common transaction/inode/quota allocation idiom X-Git-Tag: accepted/tizen/unified/20230118.172025~7707^2~44 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3a1af6c317d0a55524f39079183be107be4c1f39;p=platform%2Fkernel%2Flinux-rpi.git xfs: refactor common transaction/inode/quota allocation idiom Create a new helper xfs_trans_alloc_inode that allocates a transaction, locks and joins an inode to it, and then reserves the appropriate amount of quota against that transction. Then replace all the open-coded idioms with a single call to this helper. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Reviewed-by: Brian Foster --- diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c index e05dc0b..cb95bc7 100644 --- a/fs/xfs/libxfs/xfs_attr.c +++ b/fs/xfs/libxfs/xfs_attr.c @@ -458,14 +458,10 @@ xfs_attr_set( * Root fork attributes can use reserved data blocks for this * operation if necessary */ - error = xfs_trans_alloc(mp, &tres, total, 0, - rsvd ? XFS_TRANS_RESERVE : 0, &args->trans); + error = xfs_trans_alloc_inode(dp, &tres, total, rsvd, &args->trans); if (error) return error; - xfs_ilock(dp, XFS_ILOCK_EXCL); - xfs_trans_ijoin(args->trans, dp, 0); - if (args->value || xfs_inode_hasattr(dp)) { error = xfs_iext_count_may_overflow(dp, XFS_ATTR_FORK, XFS_IEXT_ATTR_MANIP_CNT(rmt_blks)); @@ -474,11 +470,6 @@ xfs_attr_set( } if (args->value) { - error = xfs_trans_reserve_quota_nblks(args->trans, dp, - args->total, 0, rsvd); - if (error) - goto out_trans_cancel; - error = xfs_has_attr(args); if (error == -EEXIST && (args->attr_flags & XATTR_CREATE)) goto out_trans_cancel; diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index 6e67343..be66616 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -1079,19 +1079,13 @@ xfs_bmap_add_attrfork( blks = XFS_ADDAFORK_SPACE_RES(mp); - error = xfs_trans_alloc(mp, &M_RES(mp)->tr_addafork, blks, 0, - rsvd ? XFS_TRANS_RESERVE : 0, &tp); + error = xfs_trans_alloc_inode(ip, &M_RES(mp)->tr_addafork, blks, + rsvd, &tp); if (error) return error; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_trans_reserve_quota_nblks(tp, ip, blks, 0, rsvd); - if (error) - goto trans_cancel; if (XFS_IFORK_Q(ip)) goto trans_cancel; - xfs_trans_ijoin(tp, ip, 0); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); error = xfs_bmap_set_attrforkoff(ip, size, &version); if (error) diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index ef8f705..c5687ae 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -873,18 +873,10 @@ xfs_unmap_extent( uint resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); int error; - error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, 0, 0, &tp); - if (error) { - ASSERT(error == -ENOSPC || XFS_FORCED_SHUTDOWN(mp)); - return error; - } - - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_trans_reserve_quota_nblks(tp, ip, resblks, 0, false); + error = xfs_trans_alloc_inode(ip, &M_RES(mp)->tr_write, resblks, + false, &tp); if (error) - goto out_trans_cancel; - - xfs_trans_ijoin(tp, ip, 0); + return error; error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK, XFS_IEXT_PUNCH_HOLE_CNT); diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index fba7303..ac91c97 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -552,18 +552,11 @@ xfs_iomap_write_unwritten( * here as we might be asked to write out the same inode that we * complete here and might deadlock on the iolock. */ - error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, 0, - XFS_TRANS_RESERVE, &tp); + error = xfs_trans_alloc_inode(ip, &M_RES(mp)->tr_write, resblks, + true, &tp); if (error) return error; - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, 0); - - error = xfs_trans_reserve_quota_nblks(tp, ip, resblks, 0, true); - if (error) - goto error_on_bmapi_transaction; - error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK, XFS_IEXT_WRITE_UNWRITTEN_CNT); if (error) diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index e72730f..156b9ed 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -20,6 +20,7 @@ #include "xfs_trace.h" #include "xfs_error.h" #include "xfs_defer.h" +#include "xfs_inode.h" kmem_zone_t *xfs_trans_zone; @@ -1024,3 +1025,50 @@ xfs_trans_roll( tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; return xfs_trans_reserve(*tpp, &tres, 0, 0); } + +/* + * Allocate an transaction, lock and join the inode to it, and reserve quota. + * + * The caller must ensure that the on-disk dquots attached to this inode have + * already been allocated and initialized. The caller is responsible for + * releasing ILOCK_EXCL if a new transaction is returned. + */ +int +xfs_trans_alloc_inode( + struct xfs_inode *ip, + struct xfs_trans_res *resv, + unsigned int dblocks, + bool force, + struct xfs_trans **tpp) +{ + struct xfs_trans *tp; + struct xfs_mount *mp = ip->i_mount; + int error; + + error = xfs_trans_alloc(mp, resv, dblocks, 0, + force ? XFS_TRANS_RESERVE : 0, &tp); + if (error) + return error; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, ip, 0); + + error = xfs_qm_dqattach_locked(ip, false); + if (error) { + /* Caller should have allocated the dquots! */ + ASSERT(error != -ENOENT); + goto out_cancel; + } + + error = xfs_trans_reserve_quota_nblks(tp, ip, dblocks, 0, force); + if (error) + goto out_cancel; + + *tpp = tp; + return 0; + +out_cancel: + xfs_trans_cancel(tp); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + return error; +} diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index 0846589..aa50be2 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -268,4 +268,7 @@ xfs_trans_item_relog( return lip->li_ops->iop_relog(lip, tp); } +int xfs_trans_alloc_inode(struct xfs_inode *ip, struct xfs_trans_res *resv, + unsigned int dblocks, bool force, struct xfs_trans **tpp); + #endif /* __XFS_TRANS_H__ */