Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge branch 'iomap-5.12-fixes' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap fix from Darrick Wong:
"A single fix to the iomap code which fixes some drama when someone
gives us a {de,ma}liciously fragmented swap file"
* 'iomap-5.12-fixes' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: Fix negative assignment to unsigned sis->pages in iomap_swapfile_activate
+10
+10
fs/iomap/swapfile.c
+10
fs/iomap/swapfile.c
···
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return ret;
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171
}
172
172
173
+
/*
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+
* If this swapfile doesn't contain even a single page-aligned
175
+
* contiguous range of blocks, reject this useless swapfile to
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+
* prevent confusion later on.
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+
*/
178
+
if (isi.nr_pages == 0) {
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+
pr_warn("swapon: Cannot find a single usable page in file.\n");
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+
return -EINVAL;
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+
}
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+
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*pagespan = 1 + isi.highest_ppage - isi.lowest_ppage;
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sis->max = isi.nr_pages;
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sis->pages = isi.nr_pages - 1;