From a5084865524dee1fe8ea1fee17c60b4369ad4f5e Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Thu, 2 Jan 2020 13:25:00 -0800 Subject: xfs: introduce XFS_MAX_FILEOFF Introduce a new #define for the maximum supported file block offset. We'll use this in the next patch to make it more obvious that we're doing some operation for all possible inode fork mappings after a given offset. We can't use ULLONG_MAX here because bunmapi uses that to detect when it's done. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig --- fs/xfs/xfs_reflink.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/xfs/xfs_reflink.c') diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index de451235c4ee..7a6c94295b8a 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -1457,7 +1457,8 @@ xfs_reflink_clear_inode_flag( * We didn't find any shared blocks so turn off the reflink flag. * First, get rid of any leftover CoW mappings. */ - error = xfs_reflink_cancel_cow_blocks(ip, tpp, 0, NULLFILEOFF, true); + error = xfs_reflink_cancel_cow_blocks(ip, tpp, 0, XFS_MAX_FILEOFF, + true); if (error) return error; -- cgit From aa124436f329cc23e88ce67c81b5f6b7f4930529 Mon Sep 17 00:00:00 2001 From: zhengbin Date: Mon, 20 Jan 2020 14:34:47 -0800 Subject: xfs: change return value of xfs_inode_need_cow to int Fixes coccicheck warning: fs/xfs/xfs_reflink.c:236:9-10: WARNING: return of 0/1 in function 'xfs_inode_need_cow' with return type bool Reported-by: Hulk Robot Signed-off-by: zhengbin [darrick: rename the function so it doesn't sound like a predicate] Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/xfs_iomap.c | 2 +- fs/xfs/xfs_reflink.c | 6 +++--- fs/xfs/xfs_reflink.h | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) (limited to 'fs/xfs/xfs_reflink.c') diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 28e2d1f37267..bb590a267a7f 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -923,7 +923,7 @@ xfs_buffered_write_iomap_begin( xfs_trim_extent(&imap, offset_fsb, end_fsb - offset_fsb); /* Trim the mapping to the nearest shared extent boundary. */ - error = xfs_inode_need_cow(ip, &imap, &shared); + error = xfs_bmap_trim_cow(ip, &imap, &shared); if (error) goto out_unlock; diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 7a6c94295b8a..e723b267a247 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -223,8 +223,8 @@ xfs_reflink_trim_around_shared( } } -bool -xfs_inode_need_cow( +int +xfs_bmap_trim_cow( struct xfs_inode *ip, struct xfs_bmbt_irec *imap, bool *shared) @@ -327,7 +327,7 @@ xfs_find_trim_cow_extent( if (cmap->br_startoff > offset_fsb) { xfs_trim_extent(imap, imap->br_startoff, cmap->br_startoff - imap->br_startoff); - return xfs_inode_need_cow(ip, imap, shared); + return xfs_bmap_trim_cow(ip, imap, shared); } *shared = true; diff --git a/fs/xfs/xfs_reflink.h b/fs/xfs/xfs_reflink.h index d18ad7f4fb64..3e4fd46373ab 100644 --- a/fs/xfs/xfs_reflink.h +++ b/fs/xfs/xfs_reflink.h @@ -22,7 +22,7 @@ extern int xfs_reflink_find_shared(struct xfs_mount *mp, struct xfs_trans *tp, xfs_agblock_t *fbno, xfs_extlen_t *flen, bool find_maximal); extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip, struct xfs_bmbt_irec *irec, bool *shared); -bool xfs_inode_need_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap, +int xfs_bmap_trim_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap, bool *shared); int xfs_reflink_allocate_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap, -- cgit From 706b8c5bc70391be510a5454f307db90b622b279 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Thu, 23 Jan 2020 17:01:20 -0800 Subject: xfs: remove unnecessary null pointer checks from _read_agf callers Drop the null buffer pointer checks in all code that calls xfs_alloc_read_agf and doesn't pass XFS_ALLOC_FLAG_TRYLOCK because they're no longer necessary. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig Reviewed-by: Dave Chinner --- fs/xfs/libxfs/xfs_refcount.c | 6 ------ fs/xfs/scrub/agheader_repair.c | 4 ---- fs/xfs/scrub/fscounters.c | 3 --- fs/xfs/scrub/repair.c | 2 -- fs/xfs/xfs_discard.c | 2 +- fs/xfs/xfs_reflink.c | 2 -- 6 files changed, 1 insertion(+), 18 deletions(-) (limited to 'fs/xfs/xfs_reflink.c') diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c index d7d702ee4d1a..6e1665f2cb67 100644 --- a/fs/xfs/libxfs/xfs_refcount.c +++ b/fs/xfs/libxfs/xfs_refcount.c @@ -1177,8 +1177,6 @@ xfs_refcount_finish_one( XFS_ALLOC_FLAG_FREEING, &agbp); if (error) return error; - if (XFS_IS_CORRUPT(tp->t_mountp, !agbp)) - return -EFSCORRUPTED; rcur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno); if (!rcur) { @@ -1718,10 +1716,6 @@ xfs_refcount_recover_cow_leftovers( error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp); if (error) goto out_trans; - if (!agbp) { - error = -ENOMEM; - goto out_trans; - } cur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno); /* Find all the leftover CoW staging extents. */ diff --git a/fs/xfs/scrub/agheader_repair.c b/fs/xfs/scrub/agheader_repair.c index 7a1a38b636a9..d5e6db9af434 100644 --- a/fs/xfs/scrub/agheader_repair.c +++ b/fs/xfs/scrub/agheader_repair.c @@ -659,8 +659,6 @@ xrep_agfl( error = xfs_alloc_read_agf(mp, sc->tp, sc->sa.agno, 0, &agf_bp); if (error) return error; - if (!agf_bp) - return -ENOMEM; /* * Make sure we have the AGFL buffer, as scrub might have decided it @@ -735,8 +733,6 @@ xrep_agi_find_btrees( error = xfs_alloc_read_agf(mp, sc->tp, sc->sa.agno, 0, &agf_bp); if (error) return error; - if (!agf_bp) - return -ENOMEM; /* Find the btree roots. */ error = xrep_find_ag_btree_roots(sc, agf_bp, fab, NULL); diff --git a/fs/xfs/scrub/fscounters.c b/fs/xfs/scrub/fscounters.c index 7251c66a82c9..ec2064ed3c30 100644 --- a/fs/xfs/scrub/fscounters.c +++ b/fs/xfs/scrub/fscounters.c @@ -83,9 +83,6 @@ xchk_fscount_warmup( error = xfs_alloc_read_agf(mp, sc->tp, agno, 0, &agf_bp); if (error) break; - error = -ENOMEM; - if (!agf_bp || !agi_bp) - break; /* * These are supposed to be initialized by the header read diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c index 3df49d487940..e489d7a8446a 100644 --- a/fs/xfs/scrub/repair.c +++ b/fs/xfs/scrub/repair.c @@ -546,8 +546,6 @@ xrep_reap_block( error = xfs_alloc_read_agf(sc->mp, sc->tp, agno, 0, &agf_bp); if (error) return error; - if (!agf_bp) - return -ENOMEM; } else { agf_bp = sc->sa.agf_bp; } diff --git a/fs/xfs/xfs_discard.c b/fs/xfs/xfs_discard.c index cae613620175..0b8350e84d28 100644 --- a/fs/xfs/xfs_discard.c +++ b/fs/xfs/xfs_discard.c @@ -45,7 +45,7 @@ xfs_trim_extents( xfs_log_force(mp, XFS_LOG_SYNC); error = xfs_alloc_read_agf(mp, NULL, agno, 0, &agbp); - if (error || !agbp) + if (error) goto out_put_perag; cur = xfs_allocbt_init_cursor(mp, NULL, agbp, agno, XFS_BTNUM_CNT); diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index e723b267a247..b0ce04ffd3cd 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -143,8 +143,6 @@ xfs_reflink_find_shared( error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp); if (error) return error; - if (!agbp) - return -ENOMEM; cur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno); -- cgit