diff options
| -rw-r--r-- | fs/xfs/xfs_acl.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_attr_leaf.c | 64 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode.c | 21 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode.h | 1 | ||||
| -rw-r--r-- | fs/xfs/xfs_sync.c | 11 |
5 files changed, 74 insertions, 25 deletions
diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c index b6c4b3795c4a..76e4266d2e7e 100644 --- a/fs/xfs/xfs_acl.c +++ b/fs/xfs/xfs_acl.c @@ -42,6 +42,8 @@ xfs_acl_from_disk(struct xfs_acl *aclp) int count, i; count = be32_to_cpu(aclp->acl_cnt); + if (count > XFS_ACL_MAX_ENTRIES) + return ERR_PTR(-EFSCORRUPTED); acl = posix_acl_alloc(count, GFP_KERNEL); if (!acl) diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index d4906e7c9787..c1b55e596551 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -110,6 +110,7 @@ xfs_attr_namesp_match(int arg_flags, int ondisk_flags) /* * Query whether the requested number of additional bytes of extended * attribute space will be able to fit inline. + * * Returns zero if not, else the di_forkoff fork offset to be used in the * literal area for attribute data once the new bytes have been added. * @@ -122,7 +123,7 @@ xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes) int offset; int minforkoff; /* lower limit on valid forkoff locations */ int maxforkoff; /* upper limit on valid forkoff locations */ - int dsize; + int dsize; xfs_mount_t *mp = dp->i_mount; offset = (XFS_LITINO(mp) - bytes) >> 3; /* rounded down */ @@ -136,47 +137,60 @@ xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes) return (offset >= minforkoff) ? minforkoff : 0; } - if (!(mp->m_flags & XFS_MOUNT_ATTR2)) { - if (bytes <= XFS_IFORK_ASIZE(dp)) - return dp->i_d.di_forkoff; + /* + * If the requested numbers of bytes is smaller or equal to the + * current attribute fork size we can always proceed. + * + * Note that if_bytes in the data fork might actually be larger than + * the current data fork size is due to delalloc extents. In that + * case either the extent count will go down when they are converted + * to real extents, or the delalloc conversion will take care of the + * literal area rebalancing. + */ + if (bytes <= XFS_IFORK_ASIZE(dp)) + return dp->i_d.di_forkoff; + + /* + * For attr2 we can try to move the forkoff if there is space in the + * literal area, but for the old format we are done if there is no + * space in the fixed attribute fork. + */ + if (!(mp->m_flags & XFS_MOUNT_ATTR2)) return 0; - } dsize = dp->i_df.if_bytes; - + switch (dp->i_d.di_format) { case XFS_DINODE_FMT_EXTENTS: - /* + /* * If there is no attr fork and the data fork is extents, - * determine if creating the default attr fork will result - * in the extents form migrating to btree. If so, the - * minimum offset only needs to be the space required for + * determine if creating the default attr fork will result + * in the extents form migrating to btree. If so, the + * minimum offset only needs to be the space required for * the btree root. - */ + */ if (!dp->i_d.di_forkoff && dp->i_df.if_bytes > xfs_default_attroffset(dp)) dsize = XFS_BMDR_SPACE_CALC(MINDBTPTRS); break; - case XFS_DINODE_FMT_BTREE: /* - * If have data btree then keep forkoff if we have one, - * otherwise we are adding a new attr, so then we set - * minforkoff to where the btree root can finish so we have + * If we have a data btree then keep forkoff if we have one, + * otherwise we are adding a new attr, so then we set + * minforkoff to where the btree root can finish so we have * plenty of room for attrs */ if (dp->i_d.di_forkoff) { - if (offset < dp->i_d.di_forkoff) + if (offset < dp->i_d.di_forkoff) return 0; - else - return dp->i_d.di_forkoff; - } else - dsize = XFS_BMAP_BROOT_SPACE(dp->i_df.if_broot); + return dp->i_d.di_forkoff; + } + dsize = XFS_BMAP_BROOT_SPACE(dp->i_df.if_broot); break; } - - /* - * A data fork btree root must have space for at least + + /* + * A data fork btree root must have space for at least * MINDBTPTRS key/ptr pairs if the data fork is small or empty. */ minforkoff = MAX(dsize, XFS_BMDR_SPACE_CALC(MINDBTPTRS)); @@ -186,10 +200,10 @@ xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes) maxforkoff = XFS_LITINO(mp) - XFS_BMDR_SPACE_CALC(MINABTPTRS); maxforkoff = maxforkoff >> 3; /* rounded down */ - if (offset >= minforkoff && offset < maxforkoff) - return offset; if (offset >= maxforkoff) return maxforkoff; + if (offset >= minforkoff) + return offset; return 0; } diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index c0237c602f11..755ee8164880 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2835,6 +2835,27 @@ corrupt_out: return XFS_ERROR(EFSCORRUPTED); } +void +xfs_promote_inode( + struct xfs_inode *ip) +{ + struct xfs_buf *bp; + + ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); + + bp = xfs_incore(ip->i_mount->m_ddev_targp, ip->i_imap.im_blkno, + ip->i_imap.im_len, XBF_TRYLOCK); + if (!bp) + return; + + if (XFS_BUF_ISDELAYWRITE(bp)) { + xfs_buf_delwri_promote(bp); + wake_up_process(ip->i_mount->m_ddev_targp->bt_task); + } + + xfs_buf_relse(bp); +} + /* * Return a pointer to the extent record at file index idx. */ diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 760140d1dd66..b4cd4739f98e 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -498,6 +498,7 @@ int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); void xfs_iext_realloc(xfs_inode_t *, int, int); void xfs_iunpin_wait(xfs_inode_t *); int xfs_iflush(xfs_inode_t *, uint); +void xfs_promote_inode(struct xfs_inode *); void xfs_lock_inodes(xfs_inode_t **, int, uint); void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); diff --git a/fs/xfs/xfs_sync.c b/fs/xfs/xfs_sync.c index aa3dc1a4d53d..be5c51d8f757 100644 --- a/fs/xfs/xfs_sync.c +++ b/fs/xfs/xfs_sync.c @@ -770,6 +770,17 @@ restart: if (!xfs_iflock_nowait(ip)) { if (!(sync_mode & SYNC_WAIT)) goto out; + + /* + * If we only have a single dirty inode in a cluster there is + * a fair chance that the AIL push may have pushed it into + * the buffer, but xfsbufd won't touch it until 30 seconds + * from now, and thus we will lock up here. + * + * Promote the inode buffer to the front of the delwri list + * and wake up xfsbufd now. + */ + xfs_promote_inode(ip); xfs_iflock(ip); } |