diff options
author | Dave Chinner <david@fromorbit.com> | 2014-06-10 07:32:56 +1000 |
---|---|---|
committer | Dave Chinner <david@fromorbit.com> | 2014-06-10 07:32:56 +1000 |
commit | 7691283d0561a350b7517be94818669fb5e3d910 (patch) | |
tree | 3b939ee86e763c22c6ead988bf62de58e1981915 | |
parent | 8612c7e594808e4a67bc2d4661f5925df2be3f51 (diff) | |
parent | 30265117ee1e23fa91920f337a3ea91207f700dc (diff) |
Merge branch 'xfs-misc-fixes-3-for-3.16' into for-next
-rw-r--r-- | fs/xfs/xfs_alloc.c | 19 | ||||
-rw-r--r-- | fs/xfs/xfs_aops.c | 6 | ||||
-rw-r--r-- | fs/xfs/xfs_bit.h | 7 | ||||
-rw-r--r-- | fs/xfs/xfs_bmap_util.c | 16 | ||||
-rw-r--r-- | fs/xfs/xfs_bmap_util.h | 13 | ||||
-rw-r--r-- | fs/xfs/xfs_btree.c | 12 | ||||
-rw-r--r-- | fs/xfs/xfs_buf.h | 5 | ||||
-rw-r--r-- | fs/xfs/xfs_buf_item.c | 2 | ||||
-rw-r--r-- | fs/xfs/xfs_dquot.c | 6 | ||||
-rw-r--r-- | fs/xfs/xfs_ialloc.c | 1 | ||||
-rw-r--r-- | fs/xfs/xfs_log.c | 2 | ||||
-rw-r--r-- | fs/xfs/xfs_mount.c | 23 | ||||
-rw-r--r-- | fs/xfs/xfs_rtbitmap.c | 1 |
13 files changed, 60 insertions, 53 deletions
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c index c1cf6a336a7..d43813267a8 100644 --- a/fs/xfs/xfs_alloc.c +++ b/fs/xfs/xfs_alloc.c @@ -257,16 +257,14 @@ xfs_alloc_fix_len( k = rlen % args->prod; if (k == args->mod) return; - if (k > args->mod) { - if ((int)(rlen = rlen - k - args->mod) < (int)args->minlen) - return; - } else { - if ((int)(rlen = rlen - args->prod - (args->mod - k)) < - (int)args->minlen) - return; - } - ASSERT(rlen >= args->minlen); - ASSERT(rlen <= args->maxlen); + if (k > args->mod) + rlen = rlen - (k - args->mod); + else + rlen = rlen - args->prod + (args->mod - k); + if ((int)rlen < (int)args->minlen) + return; + ASSERT(rlen >= args->minlen && rlen <= args->maxlen); + ASSERT(rlen % args->prod == args->mod); args->len = rlen; } @@ -541,7 +539,6 @@ xfs_alloc_read_agfl( XFS_FSS_TO_BB(mp, 1), 0, &bp, &xfs_agfl_buf_ops); if (error) return error; - ASSERT(!xfs_buf_geterror(bp)); xfs_buf_set_ref(bp, XFS_AGFL_REF); *bpp = bp; return 0; diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index d1b99b692cc..e32640eedea 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -975,7 +975,7 @@ xfs_vm_writepage( * Given that we do not allow direct reclaim to call us, we should * never be called while in a filesystem transaction. */ - if (WARN_ON(current->flags & PF_FSTRANS)) + if (WARN_ON_ONCE(current->flags & PF_FSTRANS)) goto redirty; /* Is this page beyond the end of the file? */ @@ -1225,9 +1225,9 @@ xfs_vm_releasepage( xfs_count_page_state(page, &delalloc, &unwritten); - if (WARN_ON(delalloc)) + if (WARN_ON_ONCE(delalloc)) return 0; - if (WARN_ON(unwritten)) + if (WARN_ON_ONCE(unwritten)) return 0; return try_to_free_buffers(page); diff --git a/fs/xfs/xfs_bit.h b/fs/xfs/xfs_bit.h index f1e3c907044..e1649c0d3e0 100644 --- a/fs/xfs/xfs_bit.h +++ b/fs/xfs/xfs_bit.h @@ -66,8 +66,11 @@ static inline int xfs_lowbit64(__uint64_t v) n = ffs(w); } else { /* upper bits */ w = (__uint32_t)(v >> 32); - if (w && (n = ffs(w))) - n += 32; + if (w) { + n = ffs(w); + if (n) + n += 32; + } } return n - 1; } diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 057f671811d..703b3ec1796 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -258,14 +258,23 @@ xfs_bmapi_allocate_worker( struct xfs_bmalloca *args = container_of(work, struct xfs_bmalloca, work); unsigned long pflags; + unsigned long new_pflags = PF_FSTRANS; - /* we are in a transaction context here */ - current_set_flags_nested(&pflags, PF_FSTRANS); + /* + * we are in a transaction context here, but may also be doing work + * in kswapd context, and hence we may need to inherit that state + * temporarily to ensure that we don't block waiting for memory reclaim + * in any way. + */ + if (args->kswapd) + new_pflags |= PF_MEMALLOC | PF_SWAPWRITE | PF_KSWAPD; + + current_set_flags_nested(&pflags, new_pflags); args->result = __xfs_bmapi_allocate(args); complete(args->done); - current_restore_flags_nested(&pflags, PF_FSTRANS); + current_restore_flags_nested(&pflags, new_pflags); } /* @@ -284,6 +293,7 @@ xfs_bmapi_allocate( args->done = &done; + args->kswapd = current_is_kswapd(); INIT_WORK_ONSTACK(&args->work, xfs_bmapi_allocate_worker); queue_work(xfs_alloc_wq, &args->work); wait_for_completion(&done); diff --git a/fs/xfs/xfs_bmap_util.h b/fs/xfs/xfs_bmap_util.h index 935ed2b24ed..075f72232a6 100644 --- a/fs/xfs/xfs_bmap_util.h +++ b/fs/xfs/xfs_bmap_util.h @@ -50,12 +50,13 @@ struct xfs_bmalloca { xfs_extlen_t total; /* total blocks needed for xaction */ xfs_extlen_t minlen; /* minimum allocation size (blocks) */ xfs_extlen_t minleft; /* amount must be left after alloc */ - char eof; /* set if allocating past last extent */ - char wasdel; /* replacing a delayed allocation */ - char userdata;/* set if is user data */ - char aeof; /* allocated space at eof */ - char conv; /* overwriting unwritten extents */ - char stack_switch; + bool eof; /* set if allocating past last extent */ + bool wasdel; /* replacing a delayed allocation */ + bool userdata;/* set if is user data */ + bool aeof; /* allocated space at eof */ + bool conv; /* overwriting unwritten extents */ + bool stack_switch; + bool kswapd; /* allocation in kswapd context */ int flags; struct completion *done; struct work_struct work; diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c index 182bac2bb27..bf810c6baf2 100644 --- a/fs/xfs/xfs_btree.c +++ b/fs/xfs/xfs_btree.c @@ -553,14 +553,11 @@ xfs_btree_get_bufl( xfs_fsblock_t fsbno, /* file system block number */ uint lock) /* lock flags for get_buf */ { - xfs_buf_t *bp; /* buffer pointer (return value) */ xfs_daddr_t d; /* real disk block address */ ASSERT(fsbno != NULLFSBLOCK); d = XFS_FSB_TO_DADDR(mp, fsbno); - bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); - ASSERT(!xfs_buf_geterror(bp)); - return bp; + return xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); } /* @@ -575,15 +572,12 @@ xfs_btree_get_bufs( xfs_agblock_t agbno, /* allocation group block number */ uint lock) /* lock flags for get_buf */ { - xfs_buf_t *bp; /* buffer pointer (return value) */ xfs_daddr_t d; /* real disk block address */ ASSERT(agno != NULLAGNUMBER); ASSERT(agbno != NULLAGBLOCK); d = XFS_AGB_TO_DADDR(mp, agno, agbno); - bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); - ASSERT(!xfs_buf_geterror(bp)); - return bp; + return xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); } /* @@ -723,7 +717,6 @@ xfs_btree_read_bufl( mp->m_bsize, lock, &bp, ops); if (error) return error; - ASSERT(!xfs_buf_geterror(bp)); if (bp) xfs_buf_set_ref(bp, refval); *bpp = bp; @@ -1179,7 +1172,6 @@ xfs_btree_read_buf_block( if (error) return error; - ASSERT(!xfs_buf_geterror(*bpp)); xfs_btree_set_refs(cur, *bpp); *block = XFS_BUF_TO_BLOCK(*bpp); return 0; diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 0e47fd1fedb..3a7a5523d3d 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -298,11 +298,6 @@ extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, void *, extern int xfs_bioerror_relse(struct xfs_buf *); -static inline int xfs_buf_geterror(xfs_buf_t *bp) -{ - return bp ? bp->b_error : ENOMEM; -} - /* Buffer Utility Routines */ extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t); diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 64b17f5bed9..4654338b03f 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -1052,7 +1052,7 @@ xfs_buf_iodone_callbacks( static ulong lasttime; static xfs_buftarg_t *lasttarg; - if (likely(!xfs_buf_geterror(bp))) + if (likely(!bp->b_error)) goto do_callbacks; /* diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 5fec738f1f2..3ee0cd43edc 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -353,10 +353,10 @@ xfs_qm_dqalloc( dqp->q_blkno, mp->m_quotainfo->qi_dqchunklen, 0); - - error = xfs_buf_geterror(bp); - if (error) + if (!bp) { + error = ENOMEM; goto error1; + } bp->b_ops = &xfs_dquot_buf_ops; /* diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index e8dfaf03923..5960e5593fe 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -2129,7 +2129,6 @@ xfs_read_agi( if (error) return error; - ASSERT(!xfs_buf_geterror(*bpp)); xfs_buf_set_ref(*bpp, XFS_AGI_REF); return 0; } diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 3554098692d..292308dede6 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1165,7 +1165,7 @@ xlog_iodone(xfs_buf_t *bp) /* * Race to shutdown the filesystem if we see an error. */ - if (XFS_TEST_ERROR((xfs_buf_geterror(bp)), l->l_mp, + if (XFS_TEST_ERROR(bp->b_error, l->l_mp, XFS_ERRTAG_IODONE_IOERR, XFS_RANDOM_IODONE_IOERR)) { xfs_buf_ioerror_alert(bp, __func__); xfs_buf_stale(bp); diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 03c9d645865..3507cd0ec40 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -323,8 +323,19 @@ reread: /* * Initialize the mount structure from the superblock. */ - xfs_sb_from_disk(&mp->m_sb, XFS_BUF_TO_SBP(bp)); - xfs_sb_quota_from_disk(&mp->m_sb); + xfs_sb_from_disk(sbp, XFS_BUF_TO_SBP(bp)); + xfs_sb_quota_from_disk(sbp); + + /* + * If we haven't validated the superblock, do so now before we try + * to check the sector size and reread the superblock appropriately. + */ + if (sbp->sb_magicnum != XFS_SB_MAGIC) { + if (loud) + xfs_warn(mp, "Invalid superblock magic number"); + error = EINVAL; + goto release_buf; + } /* * We must be able to do sector-sized and sector-aligned IO. @@ -337,11 +348,11 @@ reread: goto release_buf; } - /* - * Re-read the superblock so the buffer is correctly sized, - * and properly verified. - */ if (buf_ops == NULL) { + /* + * Re-read the superblock so the buffer is correctly sized, + * and properly verified. + */ xfs_buf_relse(bp); sector_size = sbp->sb_sectsize; buf_ops = loud ? &xfs_sb_buf_ops : &xfs_sb_quiet_buf_ops; diff --git a/fs/xfs/xfs_rtbitmap.c b/fs/xfs/xfs_rtbitmap.c index b1f2fe8af4a..f4dd697cac0 100644 --- a/fs/xfs/xfs_rtbitmap.c +++ b/fs/xfs/xfs_rtbitmap.c @@ -74,7 +74,6 @@ xfs_rtbuf_get( mp->m_bsize, 0, &bp, NULL); if (error) return error; - ASSERT(!xfs_buf_geterror(bp)); *bpp = bp; return 0; } |