From 16c5f06f15ad4e5a5d6e90b78ffb1ac14319e445 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Wed, 9 Apr 2008 09:33:41 -0400 Subject: [GFS2] fix GFP_KERNEL misuses There are several places where GFP_KERNEL allocations happen under a glock, which will result in hangs if we're under memory pressure and go to re-enter the fs in order to flush stuff out. This patch changes the culprits to GFS_NOFS to keep this problem from happening. Thank you, Signed-off-by: Josef Bacik Signed-off-by: Steven Whitehouse diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 1047a8c..3e9bd46 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -116,7 +116,7 @@ static int acl_get(struct gfs2_inode *ip, int access, struct posix_acl **acl, goto out; er.er_data_len = GFS2_EA_DATA_LEN(el->el_ea); - er.er_data = kmalloc(er.er_data_len, GFP_KERNEL); + er.er_data = kmalloc(er.er_data_len, GFP_NOFS); error = -ENOMEM; if (!er.er_data) goto out; @@ -222,7 +222,7 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct gfs2_inode *ip) return error; } - clone = posix_acl_clone(acl, GFP_KERNEL); + clone = posix_acl_clone(acl, GFP_NOFS); error = -ENOMEM; if (!clone) goto out; @@ -272,7 +272,7 @@ int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr) if (!acl) return gfs2_setattr_simple(ip, attr); - clone = posix_acl_clone(acl, GFP_KERNEL); + clone = posix_acl_clone(acl, GFP_NOFS); error = -ENOMEM; if (!clone) goto out; diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 94070ad..eed040d 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -1089,7 +1089,7 @@ static int dir_double_exhash(struct gfs2_inode *dip) /* Allocate both the "from" and "to" buffers in one big chunk */ - buf = kcalloc(3, sdp->sd_hash_bsize, GFP_KERNEL | __GFP_NOFAIL); + buf = kcalloc(3, sdp->sd_hash_bsize, GFP_NOFS | __GFP_NOFAIL); for (block = dip->i_di.di_size >> sdp->sd_hash_bsize_shift; block--;) { error = gfs2_dir_read_data(dip, (char *)buf, @@ -1378,7 +1378,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque, hash = gfs2_dir_offset2hash(*offset); index = hash >> (32 - dip->i_depth); - lp = kmalloc(sdp->sd_hash_bsize, GFP_KERNEL); + lp = kmalloc(sdp->sd_hash_bsize, GFP_NOFS); if (!lp) return -ENOMEM; @@ -1443,7 +1443,7 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque, error = -ENOMEM; /* 96 is max number of dirents which can be stuffed into an inode */ - darr = kmalloc(96 * sizeof(struct gfs2_dirent *), GFP_KERNEL); + darr = kmalloc(96 * sizeof(struct gfs2_dirent *), GFP_NOFS); if (darr) { g.pdent = darr; g.offset = 0; @@ -1789,7 +1789,7 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data) return -EIO; } - lp = kmalloc(sdp->sd_hash_bsize, GFP_KERNEL); + lp = kmalloc(sdp->sd_hash_bsize, GFP_NOFS); if (!lp) return -ENOMEM; @@ -1864,7 +1864,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, memset(&rlist, 0, sizeof(struct gfs2_rgrp_list)); - ht = kzalloc(size, GFP_KERNEL); + ht = kzalloc(size, GFP_NOFS); if (!ht) return -ENOMEM; diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c index 8175592..e3f76f4 100644 --- a/fs/gfs2/eattr.c +++ b/fs/gfs2/eattr.c @@ -448,7 +448,7 @@ static int ea_get_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea, unsigned int x; int error = 0; - bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_KERNEL); + bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS); if (!bh) return -ENOMEM; @@ -1206,7 +1206,7 @@ static int ea_acl_chmod_unstuffed(struct gfs2_inode *ip, unsigned int x; int error; - bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_KERNEL); + bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS); if (!bh) return -ENOMEM; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index dcae2aa..3a9ef52 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -1231,7 +1231,7 @@ int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len) x = ip->i_di.di_size + 1; if (x > *len) { - *buf = kmalloc(x, GFP_KERNEL); + *buf = kmalloc(x, GFP_NOFS); if (!*buf) { error = -ENOMEM; goto out_brelse; diff --git a/fs/gfs2/locking/dlm/lock.c b/fs/gfs2/locking/dlm/lock.c index 53a6ab3..cf7ea8a 100644 --- a/fs/gfs2/locking/dlm/lock.c +++ b/fs/gfs2/locking/dlm/lock.c @@ -165,7 +165,7 @@ static int gdlm_create_lp(struct gdlm_ls *ls, struct lm_lockname *name, { struct gdlm_lock *lp; - lp = kzalloc(sizeof(struct gdlm_lock), GFP_KERNEL); + lp = kzalloc(sizeof(struct gdlm_lock), GFP_NOFS); if (!lp) return -ENOMEM; @@ -383,7 +383,7 @@ static int gdlm_add_lvb(struct gdlm_lock *lp) { char *lvb; - lvb = kzalloc(GDLM_LVB_SIZE, GFP_KERNEL); + lvb = kzalloc(GDLM_LVB_SIZE, GFP_NOFS); if (!lvb) return -ENOMEM; diff --git a/fs/gfs2/locking/nolock/main.c b/fs/gfs2/locking/nolock/main.c index d3b8ce6..284a5ec 100644 --- a/fs/gfs2/locking/nolock/main.c +++ b/fs/gfs2/locking/nolock/main.c @@ -140,7 +140,7 @@ static int nolock_hold_lvb(void *lock, char **lvbp) struct nolock_lockspace *nl = lock; int error = 0; - *lvbp = kzalloc(nl->nl_lvb_size, GFP_KERNEL); + *lvbp = kzalloc(nl->nl_lvb_size, GFP_NOFS); if (!*lvbp) error = -ENOMEM; diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index c71f781..56aaf91 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -94,7 +94,7 @@ static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id, struct gfs2_quota_data *qd; int error; - qd = kzalloc(sizeof(struct gfs2_quota_data), GFP_KERNEL); + qd = kzalloc(sizeof(struct gfs2_quota_data), GFP_NOFS); if (!qd) return -ENOMEM; @@ -690,7 +690,7 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda) gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota), &data_blocks, &ind_blocks); - ghs = kcalloc(num_qd, sizeof(struct gfs2_holder), GFP_KERNEL); + ghs = kcalloc(num_qd, sizeof(struct gfs2_holder), GFP_NOFS); if (!ghs) return -ENOMEM; @@ -1118,12 +1118,12 @@ int gfs2_quota_init(struct gfs2_sbd *sdp) error = -ENOMEM; sdp->sd_quota_bitmap = kcalloc(sdp->sd_quota_chunks, - sizeof(unsigned char *), GFP_KERNEL); + sizeof(unsigned char *), GFP_NOFS); if (!sdp->sd_quota_bitmap) return error; for (x = 0; x < sdp->sd_quota_chunks; x++) { - sdp->sd_quota_bitmap[x] = kzalloc(PAGE_SIZE, GFP_KERNEL); + sdp->sd_quota_bitmap[x] = kzalloc(PAGE_SIZE, GFP_NOFS); if (!sdp->sd_quota_bitmap[x]) goto fail; } diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 06dcdc0..2888e4b 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -68,7 +68,7 @@ int gfs2_revoke_add(struct gfs2_sbd *sdp, u64 blkno, unsigned int where) return 0; } - rr = kmalloc(sizeof(struct gfs2_revoke_replay), GFP_KERNEL); + rr = kmalloc(sizeof(struct gfs2_revoke_replay), GFP_NOFS); if (!rr) return -ENOMEM; diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 88497b0..7aeacbc 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -210,7 +210,7 @@ int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector) struct page *page; struct bio *bio; - page = alloc_page(GFP_KERNEL); + page = alloc_page(GFP_NOFS); if (unlikely(!page)) return -ENOBUFS; @@ -218,7 +218,7 @@ int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector) ClearPageDirty(page); lock_page(page); - bio = bio_alloc(GFP_KERNEL, 1); + bio = bio_alloc(GFP_NOFS, 1); if (unlikely(!bio)) { __free_page(page); return -ENOBUFS; -- cgit v0.10.2