GFS2: Increase the max number of ACLs (b00263d1) · Commits · 戴 / test

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>

fs/gfs2/acl.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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) {

fs/gfs2/acl.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);

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