From ac14876cf9255175bf3bdad645bf8aa2b8fb2d7c Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 20 May 2013 09:51:12 +1000 Subject: xfs: fix missing KM_NOFS tags to keep lockdep happy There are several places where we use KM_SLEEP allocation contexts and use the fact that they are called from transaction context to add KM_NOFS where appropriate. Unfortunately, there are several places where the code makes this assumption but can be called from outside transaction context but with filesystem locks held. These places need explicit KM_NOFS annotations to avoid lockdep complaining about reclaim contexts. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers --- fs/xfs/xfs_dir2_leaf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/xfs/xfs_dir2_leaf.c') diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index 721ba2fe8e5..da71a1819d7 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -1336,7 +1336,7 @@ xfs_dir2_leaf_getdents( mp->m_sb.sb_blocksize); map_info = kmem_zalloc(offsetof(struct xfs_dir2_leaf_map_info, map) + (length * sizeof(struct xfs_bmbt_irec)), - KM_SLEEP); + KM_SLEEP | KM_NOFS); map_info->map_size = length; /* -- cgit v1.2.3-70-g09d2 From 34eefc06a06f496b92c3267a0601129a932c7174 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Thu, 27 Jun 2013 16:04:47 +1000 Subject: xfs: plug directory buffer readahead Similar to bulkstat inode chunk readahead, we need to plug directory data buffer readahead during getdents to ensure that we can merge adjacent readahead requests and sort out of order requests optimally before they are dispatched. This improves the readahead efficiency and reduces the IO load it generates as the IO patterns are significantly better for both contiguous and fragmented directories. Signed-off-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers --- fs/xfs/xfs_dir2_leaf.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/xfs/xfs_dir2_leaf.c') diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index da71a1819d7..bb22aac9fc0 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -1108,6 +1108,7 @@ xfs_dir2_leaf_readbuf( struct xfs_mount *mp = dp->i_mount; struct xfs_buf *bp = *bpp; struct xfs_bmbt_irec *map = mip->map; + struct blk_plug plug; int error = 0; int length; int i; @@ -1236,6 +1237,7 @@ xfs_dir2_leaf_readbuf( /* * Do we need more readahead? */ + blk_start_plug(&plug); for (mip->ra_index = mip->ra_offset = i = 0; mip->ra_want > mip->ra_current && i < mip->map_blocks; i += mp->m_dirblkfsbs) { @@ -1287,6 +1289,7 @@ xfs_dir2_leaf_readbuf( } } } + blk_finish_plug(&plug); out: *bpp = bp; -- cgit v1.2.3-70-g09d2 From b8227554c951eb144e975c5e741d33f29c29596f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 22 May 2013 17:07:56 -0400 Subject: [readdir] convert xfs Signed-off-by: Al Viro --- fs/xfs/xfs_dir2.c | 13 +++++-------- fs/xfs/xfs_dir2_block.c | 17 +++++++---------- fs/xfs/xfs_dir2_leaf.c | 18 ++++++++---------- fs/xfs/xfs_dir2_priv.h | 11 +++++------ fs/xfs/xfs_dir2_sf.c | 31 +++++++++++++------------------ fs/xfs/xfs_file.c | 12 +++++------- fs/xfs/xfs_vnodeops.h | 3 +-- 7 files changed, 44 insertions(+), 61 deletions(-) (limited to 'fs/xfs/xfs_dir2_leaf.c') diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c index b26a50f9921..8f023dee404 100644 --- a/fs/xfs/xfs_dir2.c +++ b/fs/xfs/xfs_dir2.c @@ -368,10 +368,8 @@ xfs_dir_removename( int xfs_readdir( xfs_inode_t *dp, - void *dirent, - size_t bufsize, - xfs_off_t *offset, - filldir_t filldir) + struct dir_context *ctx, + size_t bufsize) { int rval; /* return value */ int v; /* type-checking value */ @@ -385,14 +383,13 @@ xfs_readdir( XFS_STATS_INC(xs_dir_getdents); if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) - rval = xfs_dir2_sf_getdents(dp, dirent, offset, filldir); + rval = xfs_dir2_sf_getdents(dp, ctx); else if ((rval = xfs_dir2_isblock(NULL, dp, &v))) ; else if (v) - rval = xfs_dir2_block_getdents(dp, dirent, offset, filldir); + rval = xfs_dir2_block_getdents(dp, ctx); else - rval = xfs_dir2_leaf_getdents(dp, dirent, bufsize, offset, - filldir); + rval = xfs_dir2_leaf_getdents(dp, ctx, bufsize); return rval; } diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c index e59f5fc816f..09aea0247d9 100644 --- a/fs/xfs/xfs_dir2_block.c +++ b/fs/xfs/xfs_dir2_block.c @@ -569,9 +569,7 @@ xfs_dir2_block_addname( int /* error */ xfs_dir2_block_getdents( xfs_inode_t *dp, /* incore inode */ - void *dirent, - xfs_off_t *offset, - filldir_t filldir) + struct dir_context *ctx) { xfs_dir2_data_hdr_t *hdr; /* block header */ struct xfs_buf *bp; /* buffer for block */ @@ -589,7 +587,7 @@ xfs_dir2_block_getdents( /* * If the block number in the offset is out of range, we're done. */ - if (xfs_dir2_dataptr_to_db(mp, *offset) > mp->m_dirdatablk) + if (xfs_dir2_dataptr_to_db(mp, ctx->pos) > mp->m_dirdatablk) return 0; error = xfs_dir3_block_read(NULL, dp, &bp); @@ -600,7 +598,7 @@ xfs_dir2_block_getdents( * Extract the byte offset we start at from the seek pointer. * We'll skip entries before this. */ - wantoff = xfs_dir2_dataptr_to_off(mp, *offset); + wantoff = xfs_dir2_dataptr_to_off(mp, ctx->pos); hdr = bp->b_addr; xfs_dir3_data_check(dp, bp); /* @@ -639,13 +637,12 @@ xfs_dir2_block_getdents( cook = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, (char *)dep - (char *)hdr); + ctx->pos = cook & 0x7fffffff; /* * If it didn't fit, set the final offset to here & return. */ - if (filldir(dirent, (char *)dep->name, dep->namelen, - cook & 0x7fffffff, be64_to_cpu(dep->inumber), - DT_UNKNOWN)) { - *offset = cook & 0x7fffffff; + if (!dir_emit(ctx, (char *)dep->name, dep->namelen, + be64_to_cpu(dep->inumber), DT_UNKNOWN)) { xfs_trans_brelse(NULL, bp); return 0; } @@ -655,7 +652,7 @@ xfs_dir2_block_getdents( * Reached the end of the block. * Set the offset to a non-existent block 1 and return. */ - *offset = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk + 1, 0) & + ctx->pos = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk + 1, 0) & 0x7fffffff; xfs_trans_brelse(NULL, bp); return 0; diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index da71a1819d7..e0cc1243a8a 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -1300,10 +1300,8 @@ out: int /* error */ xfs_dir2_leaf_getdents( xfs_inode_t *dp, /* incore directory inode */ - void *dirent, - size_t bufsize, - xfs_off_t *offset, - filldir_t filldir) + struct dir_context *ctx, + size_t bufsize) { struct xfs_buf *bp = NULL; /* data block buffer */ xfs_dir2_data_hdr_t *hdr; /* data block header */ @@ -1322,7 +1320,7 @@ xfs_dir2_leaf_getdents( * If the offset is at or past the largest allowed value, * give up right away. */ - if (*offset >= XFS_DIR2_MAX_DATAPTR) + if (ctx->pos >= XFS_DIR2_MAX_DATAPTR) return 0; mp = dp->i_mount; @@ -1343,7 +1341,7 @@ xfs_dir2_leaf_getdents( * Inside the loop we keep the main offset value as a byte offset * in the directory file. */ - curoff = xfs_dir2_dataptr_to_byte(mp, *offset); + curoff = xfs_dir2_dataptr_to_byte(mp, ctx->pos); /* * Force this conversion through db so we truncate the offset @@ -1444,8 +1442,8 @@ xfs_dir2_leaf_getdents( dep = (xfs_dir2_data_entry_t *)ptr; length = xfs_dir2_data_entsize(dep->namelen); - if (filldir(dirent, (char *)dep->name, dep->namelen, - xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff, + ctx->pos = xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff; + if (!dir_emit(ctx, (char *)dep->name, dep->namelen, be64_to_cpu(dep->inumber), DT_UNKNOWN)) break; @@ -1462,9 +1460,9 @@ xfs_dir2_leaf_getdents( * All done. Set output offset value to current offset. */ if (curoff > xfs_dir2_dataptr_to_byte(mp, XFS_DIR2_MAX_DATAPTR)) - *offset = XFS_DIR2_MAX_DATAPTR & 0x7fffffff; + ctx->pos = XFS_DIR2_MAX_DATAPTR & 0x7fffffff; else - *offset = xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff; + ctx->pos = xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff; kmem_free(map_info); if (bp) xfs_trans_brelse(NULL, bp); diff --git a/fs/xfs/xfs_dir2_priv.h b/fs/xfs/xfs_dir2_priv.h index 7cf573c88aa..0511cda4a71 100644 --- a/fs/xfs/xfs_dir2_priv.h +++ b/fs/xfs/xfs_dir2_priv.h @@ -33,8 +33,8 @@ extern int xfs_dir_cilookup_result(struct xfs_da_args *args, extern const struct xfs_buf_ops xfs_dir3_block_buf_ops; extern int xfs_dir2_block_addname(struct xfs_da_args *args); -extern int xfs_dir2_block_getdents(struct xfs_inode *dp, void *dirent, - xfs_off_t *offset, filldir_t filldir); +extern int xfs_dir2_block_getdents(struct xfs_inode *dp, + struct dir_context *ctx); extern int xfs_dir2_block_lookup(struct xfs_da_args *args); extern int xfs_dir2_block_removename(struct xfs_da_args *args); extern int xfs_dir2_block_replace(struct xfs_da_args *args); @@ -91,8 +91,8 @@ extern void xfs_dir3_leaf_compact(struct xfs_da_args *args, extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_dir2_leaf_entry *ents, int *indexp, int *lowstalep, int *highstalep, int *lowlogp, int *highlogp); -extern int xfs_dir2_leaf_getdents(struct xfs_inode *dp, void *dirent, - size_t bufsize, xfs_off_t *offset, filldir_t filldir); +extern int xfs_dir2_leaf_getdents(struct xfs_inode *dp, struct dir_context *ctx, + size_t bufsize); extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno, struct xfs_buf **bpp, __uint16_t magic); extern void xfs_dir3_leaf_log_ents(struct xfs_trans *tp, struct xfs_buf *bp, @@ -153,8 +153,7 @@ extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_buf *bp, int size, xfs_dir2_sf_hdr_t *sfhp); extern int xfs_dir2_sf_addname(struct xfs_da_args *args); extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino); -extern int xfs_dir2_sf_getdents(struct xfs_inode *dp, void *dirent, - xfs_off_t *offset, filldir_t filldir); +extern int xfs_dir2_sf_getdents(struct xfs_inode *dp, struct dir_context *ctx); extern int xfs_dir2_sf_lookup(struct xfs_da_args *args); extern int xfs_dir2_sf_removename(struct xfs_da_args *args); extern int xfs_dir2_sf_replace(struct xfs_da_args *args); diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c index 6157424dbf8..97676a347da 100644 --- a/fs/xfs/xfs_dir2_sf.c +++ b/fs/xfs/xfs_dir2_sf.c @@ -768,9 +768,7 @@ xfs_dir2_sf_create( int /* error */ xfs_dir2_sf_getdents( xfs_inode_t *dp, /* incore directory inode */ - void *dirent, - xfs_off_t *offset, - filldir_t filldir) + struct dir_context *ctx) { int i; /* shortform entry number */ xfs_mount_t *mp; /* filesystem mount point */ @@ -802,7 +800,7 @@ xfs_dir2_sf_getdents( /* * If the block number in the offset is out of range, we're done. */ - if (xfs_dir2_dataptr_to_db(mp, *offset) > mp->m_dirdatablk) + if (xfs_dir2_dataptr_to_db(mp, ctx->pos) > mp->m_dirdatablk) return 0; /* @@ -819,22 +817,20 @@ xfs_dir2_sf_getdents( /* * Put . entry unless we're starting past it. */ - if (*offset <= dot_offset) { - if (filldir(dirent, ".", 1, dot_offset & 0x7fffffff, dp->i_ino, DT_DIR)) { - *offset = dot_offset & 0x7fffffff; + if (ctx->pos <= dot_offset) { + ctx->pos = dot_offset & 0x7fffffff; + if (!dir_emit(ctx, ".", 1, dp->i_ino, DT_DIR)) return 0; - } } /* * Put .. entry unless we're starting past it. */ - if (*offset <= dotdot_offset) { + if (ctx->pos <= dotdot_offset) { ino = xfs_dir2_sf_get_parent_ino(sfp); - if (filldir(dirent, "..", 2, dotdot_offset & 0x7fffffff, ino, DT_DIR)) { - *offset = dotdot_offset & 0x7fffffff; + ctx->pos = dotdot_offset & 0x7fffffff; + if (!dir_emit(ctx, "..", 2, ino, DT_DIR)) return 0; - } } /* @@ -845,21 +841,20 @@ xfs_dir2_sf_getdents( off = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, xfs_dir2_sf_get_offset(sfep)); - if (*offset > off) { + if (ctx->pos > off) { sfep = xfs_dir2_sf_nextentry(sfp, sfep); continue; } ino = xfs_dir2_sfe_get_ino(sfp, sfep); - if (filldir(dirent, (char *)sfep->name, sfep->namelen, - off & 0x7fffffff, ino, DT_UNKNOWN)) { - *offset = off & 0x7fffffff; + ctx->pos = off & 0x7fffffff; + if (!dir_emit(ctx, (char *)sfep->name, sfep->namelen, + ino, DT_UNKNOWN)) return 0; - } sfep = xfs_dir2_sf_nextentry(sfp, sfep); } - *offset = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk + 1, 0) & + ctx->pos = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk + 1, 0) & 0x7fffffff; return 0; } diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index a5f2042aec8..0ad2b95fca1 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -906,11 +906,10 @@ xfs_file_release( STATIC int xfs_file_readdir( - struct file *filp, - void *dirent, - filldir_t filldir) + struct file *file, + struct dir_context *ctx) { - struct inode *inode = file_inode(filp); + struct inode *inode = file_inode(file); xfs_inode_t *ip = XFS_I(inode); int error; size_t bufsize; @@ -929,8 +928,7 @@ xfs_file_readdir( */ bufsize = (size_t)min_t(loff_t, 32768, ip->i_d.di_size); - error = xfs_readdir(ip, dirent, bufsize, - (xfs_off_t *)&filp->f_pos, filldir); + error = xfs_readdir(ip, ctx, bufsize); if (error) return -error; return 0; @@ -1432,7 +1430,7 @@ const struct file_operations xfs_file_operations = { const struct file_operations xfs_dir_file_operations = { .open = xfs_dir_open, .read = generic_read_dir, - .readdir = xfs_file_readdir, + .iterate = xfs_file_readdir, .llseek = generic_file_llseek, .unlocked_ioctl = xfs_file_ioctl, #ifdef CONFIG_COMPAT diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h index 5163022d980..38c67c34d73 100644 --- a/fs/xfs/xfs_vnodeops.h +++ b/fs/xfs/xfs_vnodeops.h @@ -31,8 +31,7 @@ int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, struct xfs_inode *ip); int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, struct xfs_name *target_name); -int xfs_readdir(struct xfs_inode *dp, void *dirent, size_t bufsize, - xfs_off_t *offset, filldir_t filldir); +int xfs_readdir(struct xfs_inode *dp, struct dir_context *ctx, size_t bufsize); int xfs_symlink(struct xfs_inode *dp, struct xfs_name *link_name, const char *target_path, umode_t mode, struct xfs_inode **ipp); int xfs_set_dmattrs(struct xfs_inode *ip, u_int evmask, u_int16_t state); -- cgit v1.2.3-70-g09d2