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Commit b0d9bcd4 authored by Hugh Dickins's avatar Hugh Dickins Committed by Linus Torvalds
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[PATCH] swap: update swapfile i_sem comment 



Update swap extents comment: nowadays we guard with S_SWAPFILE not i_sem.

Signed-off-by: default avatarHugh Dickins <hugh@veritas.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent fd4fd5aa

mm/swapfile.c

+1 −1
Original line number Diff line number Diff line
@@ -926,7 +926,7 @@ add_swap_extent(struct swap_info_struct *sis, unsigned long start_page, 
 * requirements, they are simply tossed out - we will never use those blocks

 * for swapping.

 *

 * For S_ISREG swapfiles we hold i_sem across the life of the swapon.  This

 * For S_ISREG swapfiles we set S_SWAPFILE across the life of the swapon.  This

 * prevents root from shooting her foot off by ftruncating an in-use swapfile,

 * which will scribble on the fs.

 *