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GFS2: Increase the max number of ACLs

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This patch increases the maximum number of ACLs from 25 to 300 for
a 4K block size. The value is adjusted accordingly if the block size
is smaller. Note that this is an arbitrary limit with a performance
tradeoff, and that the physical limit is slightly over 500.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Bob Peterson 2014-03-19 09:10:21 -04:00 committed by Steven Whitehouse
parent 428fd95d85
commit b00263d1ca
2 changed files with 2 additions and 2 deletions
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2
fs/gfs2/acl.c
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@ -85,7 +85,7 @@ int gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
BUG_ON(name == NULL);
if (acl->a_count > GFS2_ACL_MAX_ENTRIES)
if (acl->a_count > GFS2_ACL_MAX_ENTRIES(GFS2_SB(inode)))
return -E2BIG;
if (type == ACL_TYPE_ACCESS) {

2
fs/gfs2/acl.h
View File

@ -14,7 +14,7 @@
#define GFS2_POSIX_ACL_ACCESS "posix_acl_access"
#define GFS2_POSIX_ACL_DEFAULT "posix_acl_default"
#define GFS2_ACL_MAX_ENTRIES 25
#define GFS2_ACL_MAX_ENTRIES(sdp) ((300 << (sdp)->sd_sb.sb_bsize_shift) >> 12)
extern struct posix_acl *gfs2_get_acl(struct inode *inode, int type);
extern int gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type);