diff options
| -rw-r--r-- | fs/xfs/Makefile | 1 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_ag.c | 404 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_ag.h | 25 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_sb.c | 73 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_sb.h | 9 | ||||
| -rw-r--r-- | fs/xfs/xfs_fsops.c | 479 |
6 files changed, 516 insertions, 475 deletions
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 57de3f4..d734445 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -28,6 +28,7 @@ xfs-y += xfs_trace.o # build the libxfs code first xfs-y += $(addprefix libxfs/, \ + xfs_ag.o \ xfs_alloc.o \ xfs_alloc_btree.o \ xfs_attr.o \ diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c new file mode 100644 index 0000000..5baa22c0 --- /dev/null +++ b/fs/xfs/libxfs/xfs_ag.c @@ -0,0 +1,404 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * Copyright (c) 2018 Red Hat, Inc. + * All rights reserved. + */ + +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "xfs_trans_resv.h" +#include "xfs_sb.h" +#include "xfs_mount.h" +#include "xfs_btree.h" +#include "xfs_alloc_btree.h" +#include "xfs_rmap_btree.h" +#include "xfs_alloc.h" +#include "xfs_rmap.h" +#include "xfs_ag.h" + +static struct xfs_buf * +xfs_get_aghdr_buf( + struct xfs_mount *mp, + xfs_daddr_t blkno, + size_t numblks, + int flags, + const struct xfs_buf_ops *ops) +{ + struct xfs_buf *bp; + + bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags); + if (!bp) + return NULL; + + xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); + bp->b_bn = blkno; + bp->b_maps[0].bm_bn = blkno; + bp->b_ops = ops; + + return bp; +} + +/* + * Generic btree root block init function + */ +static void +xfs_btroot_init( + struct xfs_mount *mp, + struct xfs_buf *bp, + struct aghdr_init_data *id) +{ + xfs_btree_init_block(mp, bp, id->type, 0, 0, id->agno, 0); +} + +/* + * Alloc btree root block init functions + */ +static void +xfs_bnoroot_init( + struct xfs_mount *mp, + struct xfs_buf *bp, + struct aghdr_init_data *id) +{ + struct xfs_alloc_rec *arec; + + xfs_btree_init_block(mp, bp, XFS_BTNUM_BNO, 0, 1, id->agno, 0); + arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); + arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); + arec->ar_blockcount = cpu_to_be32(id->agsize - + be32_to_cpu(arec->ar_startblock)); +} + +static void +xfs_cntroot_init( + struct xfs_mount *mp, + struct xfs_buf *bp, + struct aghdr_init_data *id) +{ + struct xfs_alloc_rec *arec; + + xfs_btree_init_block(mp, bp, XFS_BTNUM_CNT, 0, 1, id->agno, 0); + arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); + arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); + arec->ar_blockcount = cpu_to_be32(id->agsize - + be32_to_cpu(arec->ar_startblock)); +} + +/* + * Reverse map root block init + */ +static void +xfs_rmaproot_init( + struct xfs_mount *mp, + struct xfs_buf *bp, + struct aghdr_init_data *id) +{ + struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp); + struct xfs_rmap_rec *rrec; + + xfs_btree_init_block(mp, bp, XFS_BTNUM_RMAP, 0, 4, id->agno, 0); + + /* + * mark the AG header regions as static metadata The BNO + * btree block is the first block after the headers, so + * it's location defines the size of region the static + * metadata consumes. + * + * Note: unlike mkfs, we never have to account for log + * space when growing the data regions + */ + rrec = XFS_RMAP_REC_ADDR(block, 1); + rrec->rm_startblock = 0; + rrec->rm_blockcount = cpu_to_be32(XFS_BNO_BLOCK(mp)); + rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_FS); + rrec->rm_offset = 0; + + /* account freespace btree root blocks */ + rrec = XFS_RMAP_REC_ADDR(block, 2); + rrec->rm_startblock = cpu_to_be32(XFS_BNO_BLOCK(mp)); + rrec->rm_blockcount = cpu_to_be32(2); + rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); + rrec->rm_offset = 0; + + /* account inode btree root blocks */ + rrec = XFS_RMAP_REC_ADDR(block, 3); + rrec->rm_startblock = cpu_to_be32(XFS_IBT_BLOCK(mp)); + rrec->rm_blockcount = cpu_to_be32(XFS_RMAP_BLOCK(mp) - + XFS_IBT_BLOCK(mp)); + rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_INOBT); + rrec->rm_offset = 0; + + /* account for rmap btree root */ + rrec = XFS_RMAP_REC_ADDR(block, 4); + rrec->rm_startblock = cpu_to_be32(XFS_RMAP_BLOCK(mp)); + rrec->rm_blockcount = cpu_to_be32(1); + rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); + rrec->rm_offset = 0; + + /* account for refc btree root */ + if (xfs_sb_version_hasreflink(&mp->m_sb)) { + rrec = XFS_RMAP_REC_ADDR(block, 5); + rrec->rm_startblock = cpu_to_be32(xfs_refc_block(mp)); + rrec->rm_blockcount = cpu_to_be32(1); + rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_REFC); + rrec->rm_offset = 0; + be16_add_cpu(&block->bb_numrecs, 1); + } +} + +/* + * Initialise new secondary superblocks with the pre-grow geometry, but mark + * them as "in progress" so we know they haven't yet been activated. This will + * get cleared when the update with the new geometry information is done after + * changes to the primary are committed. This isn't strictly necessary, but we + * get it for free with the delayed buffer write lists and it means we can tell + * if a grow operation didn't complete properly after the fact. + */ +static void +xfs_sbblock_init( + struct xfs_mount *mp, + struct xfs_buf *bp, + struct aghdr_init_data *id) +{ + struct xfs_dsb *dsb = XFS_BUF_TO_SBP(bp); + + xfs_sb_to_disk(dsb, &mp->m_sb); + dsb->sb_inprogress = 1; +} + +static void +xfs_agfblock_init( + struct xfs_mount *mp, + struct xfs_buf *bp, + struct aghdr_init_data *id) +{ + struct xfs_agf *agf = XFS_BUF_TO_AGF(bp); + xfs_extlen_t tmpsize; + + agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); + agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); + agf->agf_seqno = cpu_to_be32(id->agno); + agf->agf_length = cpu_to_be32(id->agsize); + agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); + agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); + agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); + agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); + if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { + agf->agf_roots[XFS_BTNUM_RMAPi] = + cpu_to_be32(XFS_RMAP_BLOCK(mp)); + agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(1); + agf->agf_rmap_blocks = cpu_to_be32(1); + } + + agf->agf_flfirst = cpu_to_be32(1); + agf->agf_fllast = 0; + agf->agf_flcount = 0; + tmpsize = id->agsize - mp->m_ag_prealloc_blocks; + agf->agf_freeblks = cpu_to_be32(tmpsize); + agf->agf_longest = cpu_to_be32(tmpsize); + if (xfs_sb_version_hascrc(&mp->m_sb)) + uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid); + if (xfs_sb_version_hasreflink(&mp->m_sb)) { + agf->agf_refcount_root = cpu_to_be32( + xfs_refc_block(mp)); + agf->agf_refcount_level = cpu_to_be32(1); + agf->agf_refcount_blocks = cpu_to_be32(1); + } +} + +static void +xfs_agflblock_init( + struct xfs_mount *mp, + struct xfs_buf *bp, + struct aghdr_init_data *id) +{ + struct xfs_agfl *agfl = XFS_BUF_TO_AGFL(bp); + __be32 *agfl_bno; + int bucket; + + if (xfs_sb_version_hascrc(&mp->m_sb)) { + agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC); + agfl->agfl_seqno = cpu_to_be32(id->agno); + uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid); + } + + agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp); + for (bucket = 0; bucket < xfs_agfl_size(mp); bucket++) + agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); +} + +static void +xfs_agiblock_init( + struct xfs_mount *mp, + struct xfs_buf *bp, + struct aghdr_init_data *id) +{ + struct xfs_agi *agi = XFS_BUF_TO_AGI(bp); + int bucket; + + agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); + agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); + agi->agi_seqno = cpu_to_be32(id->agno); + agi->agi_length = cpu_to_be32(id->agsize); + agi->agi_count = 0; + agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); + agi->agi_level = cpu_to_be32(1); + agi->agi_freecount = 0; + agi->agi_newino = cpu_to_be32(NULLAGINO); + agi->agi_dirino = cpu_to_be32(NULLAGINO); + if (xfs_sb_version_hascrc(&mp->m_sb)) + uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid); + if (xfs_sb_version_hasfinobt(&mp->m_sb)) { + agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp)); + agi->agi_free_level = cpu_to_be32(1); + } + for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) + agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); +} + +typedef void (*aghdr_init_work_f)(struct xfs_mount *mp, struct xfs_buf *bp, + struct aghdr_init_data *id); +static int +xfs_ag_init_hdr( + struct xfs_mount *mp, + struct aghdr_init_data *id, + aghdr_init_work_f work, + const struct xfs_buf_ops *ops) + +{ + struct xfs_buf *bp; + + bp = xfs_get_aghdr_buf(mp, id->daddr, id->numblks, 0, ops); + if (!bp) + return -ENOMEM; + + (*work)(mp, bp, id); + + xfs_buf_delwri_queue(bp, &id->buffer_list); + xfs_buf_relse(bp); + return 0; +} + +struct xfs_aghdr_grow_data { + xfs_daddr_t daddr; + size_t numblks; + const struct xfs_buf_ops *ops; + aghdr_init_work_f work; + xfs_btnum_t type; + bool need_init; +}; + +/* + * Prepare new AG headers to be written to disk. We use uncached buffers here, + * as it is assumed these new AG headers are currently beyond the currently + * valid filesystem address space. Using cached buffers would trip over EOFS + * corruption detection alogrithms in the buffer cache lookup routines. + * + * This is a non-transactional function, but the prepared buffers are added to a + * delayed write buffer list supplied by the caller so they can submit them to + * disk and wait on them as required. + */ +int +xfs_ag_init_headers( + struct xfs_mount *mp, + struct aghdr_init_data *id) + +{ + struct xfs_aghdr_grow_data aghdr_data[] = { + { /* SB */ + .daddr = XFS_AG_DADDR(mp, id->agno, XFS_SB_DADDR), + .numblks = XFS_FSS_TO_BB(mp, 1), + .ops = &xfs_sb_buf_ops, + .work = &xfs_sbblock_init, + .need_init = true + }, + { /* AGF */ + .daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGF_DADDR(mp)), + .numblks = XFS_FSS_TO_BB(mp, 1), + .ops = &xfs_agf_buf_ops, + .work = &xfs_agfblock_init, + .need_init = true + }, + { /* AGFL */ + .daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGFL_DADDR(mp)), + .numblks = XFS_FSS_TO_BB(mp, 1), + .ops = &xfs_agfl_buf_ops, + .work = &xfs_agflblock_init, + .need_init = true + }, + { /* AGI */ + .daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGI_DADDR(mp)), + .numblks = XFS_FSS_TO_BB(mp, 1), + .ops = &xfs_agi_buf_ops, + .work = &xfs_agiblock_init, + .need_init = true + }, + { /* BNO root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_BNO_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_allocbt_buf_ops, + .work = &xfs_bnoroot_init, + .need_init = true + }, + { /* CNT root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_CNT_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_allocbt_buf_ops, + .work = &xfs_cntroot_init, + .need_init = true + }, + { /* INO root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_IBT_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_inobt_buf_ops, + .work = &xfs_btroot_init, + .type = XFS_BTNUM_INO, + .need_init = true + }, + { /* FINO root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_FIBT_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_inobt_buf_ops, + .work = &xfs_btroot_init, + .type = XFS_BTNUM_FINO, + .need_init = xfs_sb_version_hasfinobt(&mp->m_sb) + }, + { /* RMAP root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_RMAP_BLOCK(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_rmapbt_buf_ops, + .work = &xfs_rmaproot_init, + .need_init = xfs_sb_version_hasrmapbt(&mp->m_sb) + }, + { /* REFC root block */ + .daddr = XFS_AGB_TO_DADDR(mp, id->agno, xfs_refc_block(mp)), + .numblks = BTOBB(mp->m_sb.sb_blocksize), + .ops = &xfs_refcountbt_buf_ops, + .work = &xfs_btroot_init, + .type = XFS_BTNUM_REFC, + .need_init = xfs_sb_version_hasreflink(&mp->m_sb) + }, + { /* NULL terminating block */ + .daddr = XFS_BUF_DADDR_NULL, + } + }; + struct xfs_aghdr_grow_data *dp; + int error = 0; + + /* Account for AG free space in new AG */ + id->nfree += id->agsize - mp->m_ag_prealloc_blocks; + for (dp = &aghdr_data[0]; dp->daddr != XFS_BUF_DADDR_NULL; dp++) { + if (!dp->need_init) + continue; + + id->daddr = dp->daddr; + id->numblks = dp->numblks; + id->type = dp->type; + error = xfs_ag_init_hdr(mp, id, dp->work, dp->ops); + if (error) + break; + } + return error; +} diff --git a/fs/xfs/libxfs/xfs_ag.h b/fs/xfs/libxfs/xfs_ag.h new file mode 100644 index 0000000..69f2fd4 --- /dev/null +++ b/fs/xfs/libxfs/xfs_ag.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2018 Red Hat, Inc. + * All rights reserved. + */ + +#ifndef __LIBXFS_AG_H +#define __LIBXFS_AG_H 1 + +struct aghdr_init_data { + /* per ag data */ + xfs_agblock_t agno; /* ag to init */ + xfs_extlen_t agsize; /* new AG size */ + struct list_head buffer_list; /* buffer writeback list */ + xfs_rfsblock_t nfree; /* cumulative new free space */ + + /* per header data */ + xfs_daddr_t daddr; /* header location */ + size_t numblks; /* size of header */ + xfs_btnum_t type; /* type of btree root block */ +}; + +int xfs_ag_init_headers( struct xfs_mount *mp, struct aghdr_init_data *id); + +#endif /* __LIBXFS_AG_H */ diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index d9bef41..a35344a 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -888,6 +888,79 @@ xfs_sync_sb( return xfs_trans_commit(tp); } +/* + * Update all the secondary superblocks to match the new state of the primary. + * Because we are completely overwriting all the existing fields in the + * secondary superblock buffers, there is no need to read them in from disk. + * Just get a new buffer, stamp it and write it. + * + * The sb buffers need to be cached here so that we serialise against other + * operations that access the secondary superblocks, but we don't want to keep + * them in memory once it is written so we mark it as a one-shot buffer. + */ +int +xfs_update_secondary_sbs( + struct xfs_mount *mp) +{ + xfs_agnumber_t agno; + int saved_error = 0; + int error = 0; + LIST_HEAD (buffer_list); + + /* update secondary superblocks. */ + for (agno = 1; agno < mp->m_sb.sb_agcount; agno++) { + struct xfs_buf *bp; + + bp = xfs_buf_get(mp->m_ddev_targp, + XFS_AG_DADDR(mp, agno, XFS_SB_DADDR), + XFS_FSS_TO_BB(mp, 1), 0); + /* + * If we get an error reading or writing alternate superblocks, + * continue. xfs_repair chooses the "best" superblock based + * on most matches; if we break early, we'll leave more + * superblocks un-updated than updated, and xfs_repair may + * pick them over the properly-updated primary. + */ + if (!bp) { + xfs_warn(mp, + "error allocating secondary superblock for ag %d", + agno); + if (!saved_error) + saved_error = -ENOMEM; + continue; + } + + bp->b_ops = &xfs_sb_buf_ops; + xfs_buf_oneshot(bp); + xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); + xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); + xfs_buf_delwri_queue(bp, &buffer_list); + xfs_buf_relse(bp); + + /* don't hold too many buffers at once */ + if (agno % 16) + continue; + + error = xfs_buf_delwri_submit(&buffer_list); + if (error) { + xfs_warn(mp, + "write error %d updating a secondary superblock near ag %d", + error, agno); + if (!saved_error) + saved_error = error; + continue; + } + } + error = xfs_buf_delwri_submit(&buffer_list); + if (error) { + xfs_warn(mp, + "write error %d updating a secondary superblock near ag %d", + error, agno); + } + + return saved_error ? saved_error : error; +} + int xfs_fs_geometry( struct xfs_sb *sbp, diff --git a/fs/xfs/libxfs/xfs_sb.h b/fs/xfs/libxfs/xfs_sb.h index 5166d78..fc65d4e 100644 --- a/fs/xfs/libxfs/xfs_sb.h +++ b/fs/xfs/libxfs/xfs_sb.h @@ -18,6 +18,13 @@ #ifndef __XFS_SB_H__ #define __XFS_SB_H__ +struct xfs_mount; +struct xfs_sb; +struct xfs_dsb; +struct xfs_trans; +struct xfs_fsop_geom; +struct xfs_perag; + /* * perag get/put wrappers for ref counting */ @@ -34,6 +41,8 @@ extern void xfs_sb_from_disk(struct xfs_sb *to, struct xfs_dsb *from); extern void xfs_sb_to_disk(struct xfs_dsb *to, struct xfs_sb *from); extern void xfs_sb_quota_from_disk(struct xfs_sb *sbp); +extern int xfs_update_secondary_sbs(struct xfs_mount *mp); + #define XFS_FS_GEOM_MAX_STRUCT_VER (4) extern int xfs_fs_geometry(struct xfs_sb *sbp, struct xfs_fsop_geom *geo, int struct_version); diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index ca3cf3f..c5087b7 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -24,11 +24,7 @@ #include "xfs_sb.h" #include "xfs_mount.h" #include "xfs_defer.h" -#include "xfs_da_format.h" -#include "xfs_da_btree.h" -#include "xfs_inode.h" #include "xfs_trans.h" -#include "xfs_inode_item.h" #include "xfs_error.h" #include "xfs_btree.h" #include "xfs_alloc_btree.h" @@ -36,412 +32,18 @@ #include "xfs_rmap_btree.h" #include "xfs_ialloc.h" #include "xfs_fsops.h" -#include "xfs_itable.h" #include "xfs_trans_space.h" #include "xfs_rtalloc.h" #include "xfs_trace.h" #include "xfs_log.h" -#include "xfs_filestream.h" #include "xfs_rmap.h" +#include "xfs_ag.h" #include "xfs_ag_resv.h" /* - * File system operations - */ - -static struct xfs_buf * -xfs_growfs_get_hdr_buf( - struct xfs_mount *mp, - xfs_daddr_t blkno, - size_t numblks, - int flags, - const struct xfs_buf_ops *ops) -{ - struct xfs_buf *bp; - - bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags); - if (!bp) - return NULL; - - xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); - bp->b_bn = blkno; - bp->b_maps[0].bm_bn = blkno; - bp->b_ops = ops; - - return bp; -} - -struct aghdr_init_data { - /* per ag data */ - xfs_agnumber_t agno; /* ag to init */ - xfs_extlen_t agsize; /* new AG size */ - struct list_head buffer_list; /* buffer writeback list */ - xfs_rfsblock_t nfree; /* cumulative new free space */ - - /* per header data */ - xfs_daddr_t daddr; /* header location */ - size_t numblks; /* size of header */ - xfs_btnum_t type; /* type of btree root block */ -}; - -/* - * Generic btree root block init function - */ -static void -xfs_btroot_init( - struct xfs_mount *mp, - struct xfs_buf *bp, - struct aghdr_init_data *id) -{ - xfs_btree_init_block(mp, bp, id->type, 0, 0, id->agno, 0); -} - -/* - * Alloc btree root block init functions - */ -static void -xfs_bnoroot_init( - struct xfs_mount *mp, - struct xfs_buf *bp, - struct aghdr_init_data *id) -{ - struct xfs_alloc_rec *arec; - - xfs_btree_init_block(mp, bp, XFS_BTNUM_BNO, 0, 1, id->agno, 0); - arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); - arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); - arec->ar_blockcount = cpu_to_be32(id->agsize - - be32_to_cpu(arec->ar_startblock)); -} - -static void -xfs_cntroot_init( - struct xfs_mount *mp, - struct xfs_buf *bp, - struct aghdr_init_data *id) -{ - struct xfs_alloc_rec *arec; - - xfs_btree_init_block(mp, bp, XFS_BTNUM_CNT, 0, 1, id->agno, 0); - arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); - arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks); - arec->ar_blockcount = cpu_to_be32(id->agsize - - be32_to_cpu(arec->ar_startblock)); -} - -/* - * Reverse map root block init - */ -static void -xfs_rmaproot_init( - struct xfs_mount *mp, - struct xfs_buf *bp, - struct aghdr_init_data *id) -{ - struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp); - struct xfs_rmap_rec *rrec; - - xfs_btree_init_block(mp, bp, XFS_BTNUM_RMAP, 0, 4, id->agno, 0); - - /* - * mark the AG header regions as static metadata The BNO - * btree block is the first block after the headers, so - * it's location defines the size of region the static - * metadata consumes. - * - * Note: unlike mkfs, we never have to account for log - * space when growing the data regions - */ - rrec = XFS_RMAP_REC_ADDR(block, 1); - rrec->rm_startblock = 0; - rrec->rm_blockcount = cpu_to_be32(XFS_BNO_BLOCK(mp)); - rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_FS); - rrec->rm_offset = 0; - - /* account freespace btree root blocks */ - rrec = XFS_RMAP_REC_ADDR(block, 2); - rrec->rm_startblock = cpu_to_be32(XFS_BNO_BLOCK(mp)); - rrec->rm_blockcount = cpu_to_be32(2); - rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); - rrec->rm_offset = 0; - - /* account inode btree root blocks */ - rrec = XFS_RMAP_REC_ADDR(block, 3); - rrec->rm_startblock = cpu_to_be32(XFS_IBT_BLOCK(mp)); - rrec->rm_blockcount = cpu_to_be32(XFS_RMAP_BLOCK(mp) - - XFS_IBT_BLOCK(mp)); - rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_INOBT); - rrec->rm_offset = 0; - - /* account for rmap btree root */ - rrec = XFS_RMAP_REC_ADDR(block, 4); - rrec->rm_startblock = cpu_to_be32(XFS_RMAP_BLOCK(mp)); - rrec->rm_blockcount = cpu_to_be32(1); - rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG); - rrec->rm_offset = 0; - - /* account for refc btree root */ - if (xfs_sb_version_hasreflink(&mp->m_sb)) { - rrec = XFS_RMAP_REC_ADDR(block, 5); - rrec->rm_startblock = cpu_to_be32(xfs_refc_block(mp)); - rrec->rm_blockcount = cpu_to_be32(1); - rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_REFC); - rrec->rm_offset = 0; - be16_add_cpu(&block->bb_numrecs, 1); - } -} - -/* - * Initialise new secondary superblocks with the pre-grow geometry, but mark - * them as "in progress" so we know they haven't yet been activated. This will - * get cleared when the update with the new geometry information is done after - * changes to the primary are committed. This isn't strictly necessary, but we - * get it for free with the delayed buffer write lists and it means we can tell - * if a grow operation didn't complete properly after the fact. - */ -static void -xfs_sbblock_init( - struct xfs_mount *mp, - struct xfs_buf *bp, - struct aghdr_init_data *id) -{ - struct xfs_dsb *dsb = XFS_BUF_TO_SBP(bp); - - xfs_sb_to_disk(dsb, &mp->m_sb); - dsb->sb_inprogress = 1; -} - -static void -xfs_agfblock_init( - struct xfs_mount *mp, - struct xfs_buf *bp, - struct aghdr_init_data *id) -{ - struct xfs_agf *agf = XFS_BUF_TO_AGF(bp); - xfs_extlen_t tmpsize; - - agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); - agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); - agf->agf_seqno = cpu_to_be32(id->agno); - agf->agf_length = cpu_to_be32(id->agsize); - agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); - agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); - agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); - agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); - if (xfs_sb_version_hasrmapbt(&mp->m_sb)) { - agf->agf_roots[XFS_BTNUM_RMAPi] = - cpu_to_be32(XFS_RMAP_BLOCK(mp)); - agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(1); - agf->agf_rmap_blocks = cpu_to_be32(1); - } - - agf->agf_flfirst = cpu_to_be32(1); - agf->agf_fllast = 0; - agf->agf_flcount = 0; - tmpsize = id->agsize - mp->m_ag_prealloc_blocks; - agf->agf_freeblks = cpu_to_be32(tmpsize); - agf->agf_longest = cpu_to_be32(tmpsize); - if (xfs_sb_version_hascrc(&mp->m_sb)) - uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid); - if (xfs_sb_version_hasreflink(&mp->m_sb)) { - agf->agf_refcount_root = cpu_to_be32( - xfs_refc_block(mp)); - agf->agf_refcount_level = cpu_to_be32(1); - agf->agf_refcount_blocks = cpu_to_be32(1); - } -} - -static void -xfs_agflblock_init( - struct xfs_mount *mp, - struct xfs_buf *bp, - struct aghdr_init_data *id) -{ - struct xfs_agfl *agfl = XFS_BUF_TO_AGFL(bp); - __be32 *agfl_bno; - int bucket; - - if (xfs_sb_version_hascrc(&mp->m_sb)) { - agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC); - agfl->agfl_seqno = cpu_to_be32(id->agno); - uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid); - } - - agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp); - for (bucket = 0; bucket < xfs_agfl_size(mp); bucket++) - agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); -} - -static void -xfs_agiblock_init( - struct xfs_mount *mp, - struct xfs_buf *bp, - struct aghdr_init_data *id) -{ - struct xfs_agi *agi = XFS_BUF_TO_AGI(bp); - int bucket; - - agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); - agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); - agi->agi_seqno = cpu_to_be32(id->agno); - agi->agi_length = cpu_to_be32(id->agsize); - agi->agi_count = 0; - agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); - agi->agi_level = cpu_to_be32(1); - agi->agi_freecount = 0; - agi->agi_newino = cpu_to_be32(NULLAGINO); - agi->agi_dirino = cpu_to_be32(NULLAGINO); - if (xfs_sb_version_hascrc(&mp->m_sb)) - uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid); - if (xfs_sb_version_hasfinobt(&mp->m_sb)) { - agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp)); - agi->agi_free_level = cpu_to_be32(1); - } - for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) - agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); -} - -typedef void (*aghdr_init_work_f)(struct xfs_mount *mp, struct xfs_buf *bp, - struct aghdr_init_data *id); -static int -xfs_growfs_init_aghdr( - struct xfs_mount *mp, - struct aghdr_init_data *id, - aghdr_init_work_f work, - const struct xfs_buf_ops *ops) - -{ - struct xfs_buf *bp; - - bp = xfs_growfs_get_hdr_buf(mp, id->daddr, id->numblks, 0, ops); - if (!bp) - return -ENOMEM; - - (*work)(mp, bp, id); - - xfs_buf_delwri_queue(bp, &id->buffer_list); - xfs_buf_relse(bp); - return 0; -} - -struct xfs_aghdr_grow_data { - xfs_daddr_t daddr; - size_t numblks; - const struct xfs_buf_ops *ops; - aghdr_init_work_f work; - xfs_btnum_t type; - bool need_init; -}; - -/* - * Write new AG headers to disk. Non-transactional, but written - * synchronously so they are completed prior to the growfs transaction - * being logged. + * growfs operations */ static int -xfs_grow_ag_headers( - struct xfs_mount *mp, - struct aghdr_init_data *id) - -{ - struct xfs_aghdr_grow_data aghdr_data[] = { - { /* SB */ - .daddr = XFS_AG_DADDR(mp, id->agno, XFS_SB_DADDR), - .numblks = XFS_FSS_TO_BB(mp, 1), - .ops = &xfs_sb_buf_ops, - .work = &xfs_sbblock_init, - .need_init = true - }, - { /* AGF */ - .daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGF_DADDR(mp)), - .numblks = XFS_FSS_TO_BB(mp, 1), - .ops = &xfs_agf_buf_ops, - .work = &xfs_agfblock_init, - .need_init = true - }, - { /* AGFL */ - .daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGFL_DADDR(mp)), - .numblks = XFS_FSS_TO_BB(mp, 1), - .ops = &xfs_agfl_buf_ops, - .work = &xfs_agflblock_init, - .need_init = true - }, - { /* AGI */ - .daddr = XFS_AG_DADDR(mp, id->agno, XFS_AGI_DADDR(mp)), - .numblks = XFS_FSS_TO_BB(mp, 1), - .ops = &xfs_agi_buf_ops, - .work = &xfs_agiblock_init, - .need_init = true - }, - { /* BNO root block */ - .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_BNO_BLOCK(mp)), - .numblks = BTOBB(mp->m_sb.sb_blocksize), - .ops = &xfs_allocbt_buf_ops, - .work = &xfs_bnoroot_init, - .need_init = true - }, - { /* CNT root block */ - .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_CNT_BLOCK(mp)), - .numblks = BTOBB(mp->m_sb.sb_blocksize), - .ops = &xfs_allocbt_buf_ops, - .work = &xfs_cntroot_init, - .need_init = true - }, - { /* INO root block */ - .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_IBT_BLOCK(mp)), - .numblks = BTOBB(mp->m_sb.sb_blocksize), - .ops = &xfs_inobt_buf_ops, - .work = &xfs_btroot_init, - .type = XFS_BTNUM_INO, - .need_init = true - }, - { /* FINO root block */ - .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_FIBT_BLOCK(mp)), - .numblks = BTOBB(mp->m_sb.sb_blocksize), - .ops = &xfs_inobt_buf_ops, - .work = &xfs_btroot_init, - .type = XFS_BTNUM_FINO, - .need_init = xfs_sb_version_hasfinobt(&mp->m_sb) - }, - { /* RMAP root block */ - .daddr = XFS_AGB_TO_DADDR(mp, id->agno, XFS_RMAP_BLOCK(mp)), - .numblks = BTOBB(mp->m_sb.sb_blocksize), - .ops = &xfs_rmapbt_buf_ops, - .work = &xfs_rmaproot_init, - .need_init = xfs_sb_version_hasrmapbt(&mp->m_sb) - }, - { /* REFC root block */ - .daddr = XFS_AGB_TO_DADDR(mp, id->agno, xfs_refc_block(mp)), - .numblks = BTOBB(mp->m_sb.sb_blocksize), - .ops = &xfs_refcountbt_buf_ops, - .work = &xfs_btroot_init, - .type = XFS_BTNUM_REFC, - .need_init = xfs_sb_version_hasreflink(&mp->m_sb) - }, - { /* NULL terminating block */ - .daddr = XFS_BUF_DADDR_NULL, - } - }; - struct xfs_aghdr_grow_data *dp; - int error = 0; - - /* Account for AG free space in new AG */ - id->nfree += id->agsize - mp->m_ag_prealloc_blocks; - for (dp = &aghdr_data[0]; dp->daddr != XFS_BUF_DADDR_NULL; dp++) { - if (!dp->need_init) - continue; - - id->daddr = dp->daddr; - id->numblks = dp->numblks; - id->type = dp->type; - error = xfs_growfs_init_aghdr(mp, id, dp->work, dp->ops); - if (error) - break; - } - return error; -} - -static int xfs_growfs_data_private( xfs_mount_t *mp, /* mount point for filesystem */ xfs_growfs_data_t *in) /* growfs data input struct */ @@ -518,7 +120,7 @@ xfs_growfs_data_private( else id.agsize = mp->m_sb.sb_agblocks; - error = xfs_grow_ag_headers(mp, &id); + error = xfs_ag_init_headers(mp, &id); if (error) { xfs_buf_delwri_cancel(&id.buffer_list); goto out_trans_cancel; @@ -683,79 +285,6 @@ xfs_growfs_imaxpct( } /* - * After a grow operation, we need to update all the secondary superblocks - * to match the new state of the primary. Because we are completely overwriting - * all the existing fields in the secondary superblock buffers, there is no need - * to read them in from disk. Just get a new buffer, stamp it and write it. - * - * The sb buffers need to be cached here so that we serialise against scrub - * scanning secondary superblocks, but we don't want to keep it in memory once - * it is written so we mark it as a one-shot buffer. - */ -static int -xfs_growfs_update_superblocks( - struct xfs_mount *mp) -{ - xfs_agnumber_t agno; - int saved_error = 0; - int error = 0; - LIST_HEAD (buffer_list); - - /* update secondary superblocks. */ - for (agno = 1; agno < mp->m_sb.sb_agcount; agno++) { - struct xfs_buf *bp; - - bp = xfs_buf_get(mp->m_ddev_targp, - XFS_AG_DADDR(mp, agno, XFS_SB_DADDR), - XFS_FSS_TO_BB(mp, 1), 0); - /* - * If we get an error reading or writing alternate superblocks, - * continue. xfs_repair chooses the "best" superblock based - * on most matches; if we break early, we'll leave more - * superblocks un-updated than updated, and xfs_repair may - * pick them over the properly-updated primary. - */ - if (!bp) { - xfs_warn(mp, - "error allocating secondary superblock for ag %d", - agno); - if (!saved_error) - saved_error = -ENOMEM; - continue; - } - - bp->b_ops = &xfs_sb_buf_ops; - xfs_buf_oneshot(bp); - xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); - xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); - xfs_buf_delwri_queue(bp, &buffer_list); - xfs_buf_relse(bp); - - /* don't hold too many buffers at once */ - if (agno % 16) - continue; - - error = xfs_buf_delwri_submit(&buffer_list); - if (error) { - xfs_warn(mp, - "write error %d updating a secondary superblock near ag %d", - error, agno); - if (!saved_error) - saved_error = error; - continue; - } - } - error = xfs_buf_delwri_submit(&buffer_list); - if (error) { - xfs_warn(mp, - "write error %d updating a secondary superblock near ag %d", - error, agno); - } - - return saved_error ? saved_error : error; -} - -/* * protected versions of growfs function acquire and release locks on the mount * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, * XFS_IOC_FSGROWFSRT @@ -794,7 +323,7 @@ xfs_growfs_data( mp->m_maxicount = 0; /* Update secondary superblocks now the physical grow has completed */ - error = xfs_growfs_update_superblocks(mp); + error = xfs_update_secondary_sbs(mp); out_error: /* |
